The bet365 sportsbook is widely recognised as the world’s most popular online sports betting site. From NFL to Nascar, horse racing to hockey, the range of sports to bet on is immense, yet the site.
Being a sports bettor in the state of New Jersey kind of makes you feel like royalty these days. With so many different companies and apps available to players, you really have your pick of the litter.
The good news for bettors in the Garden State is that there are 18 online sportsbooks willing to take your action. With so many options, it can sometimes be challenging to determine what’s the best NJ online sports betting app for you to play.
Online horse betting at TVG New Jersey’s Off-track and Account Wagering Act makes account wagering on horse races perfectly legal in the state. That means NJ residents 18 years old or older are free to. Best Online Sports Betting Sites in NJ 2021. Visit DraftKings Sportsbook. UP TO $1,050 FREE. DraftKings Review. Up to $50 Matched Free Bet.
With that in mind, we’ve compiled this page of the top online sportsbooks in New Jersey to point you in the right direction. Our experienced team has taken them all for a test drive, and here’s what we found:
As of August 10, 2020, 18 online and mobile sports betting platforms are currently operating legally in NJ:
Online Sportsbook | Land-Based Affiliate | Sports betting partner(s) | Launch date |
---|---|---|---|
DraftKings | Resorts AC | Kambi | Aug. 6, 2018 |
FanDuel | Meadowlands | Flutter/IGT | Sept. 1, 2018 |
Caesars | Caesars AC | Scientific Games | Sept. 6, 2018 |
PointsBet | Meadowlands | NA | Dec. 11, 2018 |
BetMGM | Borgata AC | GVC/Roar | Aug. 22, 2018 |
Fox BET | Resorts AC | NA | Sept. 13, 2018 |
SugarHouse Sportsbook | Monmouth Park | Kambi | Aug. 23, 2018 |
Golden Nugget Sportsbook | Golden Nugget | SBTech/Scientific Games | Feb. 19, 2019 |
888sport | Caesars | Kambi | Sept. 10, 2018 |
Resorts Sportsbook | Resorts AC | SBTech | Jan. 31, 2019 |
Borgata Sports | Borgata AC | GVC/Roar | May 14, 2019 |
Bet365 Sports | Hard Rock AC | bet365 | Aug. 30, 2019 |
Unibet Sports | Hard Rock AC | Kambi | Sept. 10, 2019 |
BetAmerica | Golden Nugget | SBTech | Feb. 2, 2019 |
TheScore | Monmouth Park | Bet.Works | Sept. 3, 2019 |
Ocean Resort Sportsbook | Ocean Resort Casino | William Hill | Unknown |
Hard Rock Sportsbook | Hard Rock AC | GiG | Jan. 26, 2019 |
Harrah's | Harrah's AC | Scientific Games | Unknown |
Bally's | Bally's AC | Scientific Games | Unknown |
CG Technology | Meadowlands | Stadium Technology | 2019 |
William Hill | Monmouth | NA | Sept. 1, 2018 |
While there are lots of good options on the board, in this section, we’ve narrowed the field down to our top 10 online sports betting apps in NJ with short descriptions in order to help you make a decision on where to play.
DraftKings Sportsbook app
DraftKings Sportsbook is licensed through Resorts in Atlantic City. However, it is strictly a sports betting app. New players can claim up to $1,025 in signup bonuses, receiving a $25 free bet, a 50% deposit bonus up to $500 on deposit, and a risk-free first bet up to $500.
FanDuel Sportsbook app
FanDuel Sportsbook is one of the best options in the Garden State. Loaded with tons of betting odds, props and live betting options, this sportsbook will give you a $500 risk-free bet when you sign up for a new account.
Sugarhouse Sportsbook app
SugarHouse Sportsbook is one of the best online sports betting options in the Garden State. New customers can get a 100% bonus on their first deposit up to $250 and that only comes with a one-time wagering requirement. Remember to use the promo code ‘PLAY250’.
Fox Bet Sportsbook app
FOX Bet Sportsbook, which might look familiar as it carries the well-known FOX brand, offers new customers a trio of incentives: a $1 bet on the 76ers to win the Championship that pays 76/1, up to $500 risk-free bet as well as a deposit bonus up to $500 when you first sign up. You must use promo code ‘PLAYBONUS’.
PointsBet Sportsbook app
Pointsbet Sportsbook is known for having a huge selection of odds. They’re general with new customers too, offering up to $250 in free bets when you sign up and use the promo code ‘PLAYNJ’.
Caesar’s Sportsbook app
Caesar’s is an international gaming magnate and their NJ sportsbook app doesn’t disappoint. The app looks good, loads fast, and offers a ton of various banking methods for you to easily deposit and withdraw.
888 Sportsbook app
888 Sports is a global brand that has quickly developed a loyal following in the Garden State. When you sign up for a new account, you can earn a risk-free bet up to $500.
William Hill Sportsbook app
One of the world’s best-known sites, William Hill Sportsbook is an industry leader in New Jersey. When you sign up for a new account, you can get a $10 Free Bet offer and also a 100% deposit bonus up to $150.
Play MGM Sportsbook app
One of the most respected names in gaming is one of the best options for sports bettors in the Garden State. Sign up and use the promo code ‘PLAYBONUS’ to get a 100% deposit bonus up to $500.
Hard Rock Sportsbook app
This well-known gaming brand has run their online sportsbook app in New Jersey since January of 2019. When you sign up for a new account, you can earn a 100% bonus up to a whopping $1000.
Point Spread – A point spread is a margin of victory. This is mostly used in basketball and football. You bet on a team to ‘cover’ or win by a set point spread. For example, if it’s a 3.5-point spread, the favorite has to win by four points or more to cover while the underdog can lose by three or less, or win, and they would cover.
Moneyline – This is a simple bet where you predict the outright winner of the game. There are no points or spread involved. If the team you bet on wins, you win your bet.
Total (Over-Under) – The total is the combined final score of the two teams. You bet on whether the final score will go over or under the number that is set by the oddsmakers.
Runline – A runline is a type of spread in baseball and is always either -1.5 or +1.5. That means you either bet on a team to win by two or a team to lose by one or less, or win the game.
Puckline – The puckline is exactly the same thing as the runline but in hockey. You bet on a team either at -1.5 or +1.5.
Parlay – A parlay is a multiplier, which gives you a chance at a big payday. What you do is tie together many outcomes and if they all win, you multiply your winnings. However, it’s a risky proposition because if any single selection loses, you lose your entire parlay.
Teasers – A teaser is a type of bet that allows you to shift the point spread. For example, a two-team, seven-point teaser means you can shift the point spread in two games in your favor – however you want – by seven points. However, you also have to parlay at least two outcomes in the teaser, so there is greater risk there.
Futures Bet – A futures bet is a type of wager that is decided further down the road. That includes betting on things like who’ll win the championship, who’ll win the division or regular season win totals. These types of bets take longer to grade but if you’re right, there is usually a big payday.
Prop Bets – Props are related to all sorts of other outcomes besides the winner and loser of the game. Player props typically refer to player performance, like who’ll score the first touchdown or how many catches will a player finish with?
Team props are related to the team’s performance, such as will they score over or under a certain amount of points? Game props are related to the game itself – both teams – and could involve something like whether the game goes to overtime or betting on if there will be a score of any kind in the first 7.5 minutes of the game?
Live Betting – Live betting is the act of placing bets while the games are ongoing. As the game unfolds, the point spread, moneyline, total – and many other lines – will change based on who is winning and what’s happening in the game. Live betting is the process of betting in-game as all of the action takes place.
All of the operators in New Jersey are legal, licensed sportsbooks, so that means that banking with them is all the easier. When you’re looking to deposit or withdraw from the NJ sports betting apps, you’re going to have a number of options available to you.
NJ online sports betting apps offer the following deposit & withdraw options but keep in mind that options vary by sportsbook:
One of the most popular ways to bet on sports these days is live betting. Also known as in-game betting, this allows you to wager on the action as it happens.
Of course, you can lock in your bets before kickoff, tip-off, or first pitch, but with the innovation in technology, every sportsbook in the Garden State allows you to bet on sports in real-time. That means that after each touchdown, shot and pitch, the odds will change accordingly.
This gives you a big edge as you can watch some of the game, see how the game flow is going, and then make your decision rather than just trying to decide what to do ahead of time.
FanDuel sports betting app – Tons of live betting options on a daily basis. They have every game in every major sport covered.
DraftKings sports betting app – Live betting for days. Every type of event you’d want and more. They also have a lot of great in-game betting options beyond just the regular spread, moneyline and total.
Fox Bet betting app – Great live betting experience. Lots of lines and the app works really fast, which is important for in-game betting.
PointsBet sports betting app – Really good job with the user interface. Lots of games available for live betting.
William Hill sports betting app – Really smooth live betting experience. There is tons of in-game action available on a daily basis.
With sports betting growing every day in NJ, more and more fans will be looking to enter the betting market for the first time.
However, if you want your money to last or if you’re trying to find success with sports betting so that you make a profit, you’ll have to have a strategy. If you just wing it, you’re likely to lose.
With that in mind, here are some betting tips to help get you off on the right foot:
The first thing you have to do is to develop an understanding of the basic numbers that you’ll see in a sportsbook. You might recognize the team names and the players, but you’re going to see a lot of numbers (the odds) and it’s important you understand what they mean.
When you see numbers like -130, +120, -600 or +1000, these are all betting lines in the American odds style. If the odds have a minus sign, that’s how much you’d bet to win $100 (-130 means a $130 bet pays $100).
On the other hand, a plus sign indicates how much you’d win if you bet $100 (+1000 means a $100 bet pays $1000).
Odds are sometimes written out as fractions. In this case, you might see something like 5/1 or 15/1. This means that for every $1 you bet, you’d get $5 back (5/1) or $15 back (15/1) in profit.
It’s just a different way of writing out the odds. For example, 5/1 in fractional odds is equal to +500 in American odds.
Decimal odds are another way to see the odds. You might see something like 1.3 or 2.5, which is simply another way of seeing the odds. Americans like American odds while Europeans and Asians often use the other two.
If anything seems complicated, just add a bet to your bet slip and enter an amount (before confirming) and you’ll see what the payout will be.
Most point spreads come with odds of -110 on the moneyline but they have a separate number you have to keep in mind: the spread itself. This is a margin of victory.
For example, the New York Jets might be a seven-point favorite (-7 -110), so if you bet on them, they have to win by eight or more for you to win your bet. Can they cover that number or is it better to bet against them?
When you see the odds for the over-under, they are going to have a number and you have to determine whether the final combined score of the two teams will go over or under the number.
For example, the total for a football game might be 52.5. You have to determine whether the final score will be above that number or below it. That’s how you handicap the over-under.
If you’re new to sports betting, your best bet is to start with simple bets like moneylines, point spreads and totals. In the long run, you’ll discover that there are all sorts of options like player props, futures and teasers, but start with the basics until you get the hang of it.
The biggest key to success is handicapping the games. Read up on the matchups, study all of the different types of trends and see what the experts are saying. Then when you come to a conclusion, think about where you see value.
Stick with these three types of bets when you’re new to the game and as you get a feel for sports betting, move to expand and include more wager types.
Bettors often get excited about getting in the game but if you want to be successful with sports betting, you have to have a strategy. That starts with your bankroll because if you’re not careful with it, you’re going to get cleaned out very quickly.
Think about it this way: if you’re starting with a $600 bankroll and you’re betting $200 per game, it will only take you three losses to hit zero. That’s the scenario you want to avoid because you don’t want to be reloading your account every other week.
Typically, a wise strategy is to have your average bet be about 5-10% of your bankroll. That means if you’re starting at $600, your average bet would be about $30. That way you’re able to withstand a losing streak.
Remember that bankroll management is about staying disciplined. You can’t go from betting $30 per game to betting $90 because you want to recover your losses. Come up with a game plan and stick to it.
One of the most important strategies you should employ is shopping around for the best odds. There is no cost to having accounts at multiple sportsbooks (it’s free), so it’s always good to have money in each because this will save you money.
NJ online sports betting apps will often have similar but different lines.
While that might not sound clear, let’s illustrate with an example:
As you can see, these are two of the best NJ online sportsbooks with similar, but different lines. If you like the Yankees, you’ll want to bet them at FanDuel and if you like the Red Sox, you’ll want to bet them at DraftKings.
While it might not seem like a big difference, that five-cent change can save you a lot of money in the long run. If you bet $100 per game, win half of your bets and save $5 on each loss, that means you’ll save about 2.5% per bet.
Over 20 bets, which might be a week or two of action, you might save at least $50. The most important note here is that it costs you nothing to do it, so if you don’t shop around, you’re costing yourself money.
When you open up an account at a sportsbook in New Jersey, you’re going to feel like you can bet on everything. That’s because they have so many lines up on the board and cover so many sports, that it really does feel like everything.
However, there are some limits to what’s allowed in the state. This is still a relatively new pastime, so you can expect the restrictions to ease as we make progress.
For the most part, we’re seeing the regulators respond and make decisions based on what the players want. During the 2020 COVID-19 pandemic, we saw sportsbooks start to offer odds on Russian table tennis, Chinese professional baseball, European basketball, Belarussian hockey, Cage Warriors MMA, and exhibition tennis.
There was even a push to get the annual Hot Dog Eating contest approved and they managed to do so in the nick of time. What it takes is the will of the people to request it from the sportsbooks and the sportsbooks to go to the Gaming Division and ask for the ability to open the lines.
The main restrictions these days are the election odds, some entertainment props, and a variety of obscure leagues in Europe.
The overwhelming majority of people are more than satisfied with what’s offered.
If you’re a fan of betting on college sports (who doesn’t love a good college football Saturday?) then you’ll be happy with what’s offered in the state of New Jersey.
For the most part, you’re able to bet on whatever you want in terms of college football and college basketball (and even some other college sports) minus a few restrictions.
New Jersey sports fans usually root for their hometown team according to what side of the state line they fall on. Support for Philadelphia teams runs deep throughout the entire southern part of New Jersey while support for the New York teams comes from the northern section of New Jersey.
When it comes to the four major sports leagues, New Jersey currently has six teams playing in the state with only one identifying as a New Jersey team (New Jersey Devils). The remaining five identify as New York teams.
As for Philadelphia, they are one of twelve cities that host at least one team in each of the four major sports leagues (NFL, NBA, NHL, MLB). Here’s a look at the major teams in each state:
MLB BETTING
NFL Betting
NBA BETTING
NHL BETTING
The sports betting landscape changed in May of 2018 when the United States Supreme Court decided to allow each state to make its own rules about sports betting. Since it was no longer federally restricted, many states started to welcome in sports betting with New Jersey being one of the first.
Regulated sports betting was a big win all the way around as players were obviously still betting but doing so in all sorts of unsafe ways and the states were now able to generate some income that could then be put towards infrastructure, schools or other things.
In New Jersey, online operators had to pay an initial licensing fee of $100,000 and see their gross online revenue taxed at 13.5%. Online operators also had to partner with land-based casinos, so we saw a lot of new partnerships come to light.
The entire operation is overseen by the New Jersey Division of Gaming Enforcement, which not only hands out the licenses but keeps a close eye on all of the operators to make sure they’re running a kosher operation.
They have already been doing so with online casinos and horse racing bets in NJ, so now this is just an expansion of their role as they aim to make sure that everyone is having a safe and fair experience with the online operators in the state.
Yes, you can bet on you phone in New Jersey as long as you’re a resident of the Garden State and at least 21 years of age. Every sportsbook in the Garden State has either an app or a mobile-friendly website that makes it easy to bet on the go.
Sports betting is not currently legal in the state of New York. However, you can download any of the apps in the list above, including FanDueland DraftKings, and create your account at home. From there, it’s a matter of crossing over to NJ to place your bet.
Yes, you can deposit and withdraw right from the apps. The apps allow you to do virtually everything that the full web versions of these sites do, which includes any type of banking like funding your account or requesting a withdrawal.
Typically, Visa and Mastercard are your best bets. Some sportsbooks will also accept American Express. Some banks are friendlier to sports betting transactions while others restrict them, so keep that in mind when funding your account.
There are lots of ways to deposit into a sports betting account without a credit card. You can use e-wallets like PayPal or Skrill, use PayNearMe, online bank transfers or even deposit cash at the cage of a land-based casino. Check the banking methods of the sportsbook you want to play at as they’ll have plenty of options for you.
Yes, sportsbooks in New Jersey accept Visa. It is often one of the easiest ways to deposit funds into a sports betting account.
Banks can be a bit finicky as to whether they allow online gambling or not. Sometimes even two credit cards from the same bank will produce different results. The vast majority of banks have become friendly to it, though, and you shouldn’t have a problem.
There are a whole host of options when you want to withdraw your funds. That could be everything from PayPal to receiving a check in the mail to picking up cash at the casino cage in Atlantic City. Typically, an e-wallet like PayPal is the easiest method to use.
Unfortunately, you can’t. If you’re from New Jersey and bet with a sportsbook in New Jersey, but visit California for the weekend, you’ll still be able to log into your account to check things out but while you are out of state, you won’t be able to place your bets.
Many sportsbooks like FanDuel, DraftKings, and many others will allow you to surf their website and see what the sports betting odds are for the various events.
You don’t have to be a resident of any specific state – or even be of age – to simply browse the betting lines.
The best NJ sports betting sites offer solid new player signup promos and bonus codes, but that’s just the tip of the iceberg. There are many different things that make these NJ sports betting sites unique from app to app and property to property:
NJ sports betting has been live for about 2 years now, and the rest of the US continues to follow suit. After DraftKings Sportsbook launched its highly anticipated NJ online sports betting app, many others weren’t far behind.
Each of these top 10 NJ sports betting sites offers aggressive new player bonuses that can have you playing online in no time with free bets, deposit match codes, and thousands of dollars in risk-free offers. (Updated: March 2021)
After a legal battle stretching back nearly a decade, New Jersey has won the right to offer regulated sports betting at a legal NJ sportsbook.
The Garden State officially launched legal sports betting June 14, 2018, three days after Gov. Phil Murphy signed sports betting legislation into law.
Gov. Murphy made the first wager in the state at Monmouth Park Racetrack in North Jersey. The Borgata in Atlantic City opened its sportsbook to patrons 30 minutes later.
All the remaining Atlantic City properties launched their own in-house NJ sportsbooks and their own NJ online sports betting sites.
As of March 11, 2021, 18 legal online NJ sports betting apps & sites are up and running.
Online Sportsbook | Land-Based Affiliate | Sports betting partner(s) | Launch date |
---|---|---|---|
DraftKings | Resorts AC | Kambi | Aug. 6, 2018 |
FanDuel | Meadowlands | Flutter/IGT | Sept. 1, 2018 |
Caesars | Caesars AC | Scientific Games | Sept. 6, 2018 |
PointsBet | Meadowlands | NA | Dec. 11, 2018 |
BetMGM | Borgata AC | GVC/Roar | Aug. 22, 2018 |
Fox BET | Resorts AC | NA | Sept. 13, 2018 |
SugarHouse Sportsbook | Monmouth Park | Kambi | Aug. 23, 2018 |
Golden Nugget Sportsbook | Golden Nugget | SBTech/Scientific Games | Feb. 19, 2019 |
888sport | Caesars | Kambi | Sept. 10, 2018 |
Resorts Sportsbook | Resorts AC | SBTech | Jan. 31, 2019 |
Borgata Sports | Borgata AC | GVC/Roar | May 14, 2019 |
Bet365 Sports | Hard Rock AC | bet365 | Aug. 30, 2019 |
Unibet Sports | Hard Rock AC | Kambi | Sept. 10, 2019 |
BetAmerica | Golden Nugget | SBTech | Feb. 2, 2019 |
TheScore | Monmouth Park | Bet.Works | Sept. 3, 2019 |
Ocean Resort Sportsbook | Ocean Resort Casino | William Hill | Unknown |
Hard Rock Sportsbook | Hard Rock AC | GiG | Jan. 26, 2019 |
Harrah's | Harrah's AC | Scientific Games | Unknown |
Bally's | Bally's AC | Scientific Games | Unknown |
CG Technology | Meadowlands | Stadium Technology | 2019 |
William Hill | Monmouth | NA | Sept. 1, 2018 |
There are currently 11 land-based NJ sportsbooks and horse racing locations. Here they are in no particular order. (Updated: March 2021)
Casino/Racetrack | NJ Sportsbook | NJ Sports Betting Partner | Launch Date | Open To Public? |
---|---|---|---|---|
Borgata | Moneyline Bar & Book | IGT | June 14, 2018 | Yes |
Tropicana | William Hill Sports Book at Tropicana | William Hill | Oct. 25, 2018 | Yes |
Ocean Resort | William Hill Sportsbook @ Ocean Resort | William Hill | June 28, 2018 | Yes |
Monmouth Park | Monmouth Park Sports Book by William Hill | William Hill | June 14, 2018 | Yes |
Harrah's | The Book | Scientific Games | Aug. 1, 2018 | Yes |
Hard Rock | Hard Rock Sportsbook | GiG | Jan. 30, 2019 | Yes |
Golden Nugget | The Sportsbook | SBTech | Aug. 15, 2018 | Yes |
Bally's | The Book | Scientific Games | July 30, 2018 | Yes |
Meadowlands | FanDuel Sportsbook | Betfair/FanDuel/IGT | July 14, 2018 | Yes |
Resorts | DraftKings Sportsbook at Resorts | DraftKings/Kambi; SBTech | Aug. 15, 2018 | Yes |
New Jersey has been fighting for the ability to legalize and regulate sports betting since 2012. The state tried multiple ways to circumvent the federal ban on state-regulated sports betting (the Professional and Amateur Sports Protection Act, or PASPA) and each time was blocked by the sports leagues challenging those attempts in court.
Finally, in 2017, New Jersey — to the surprise of many observers — was granted a request for its case to be heard by the U.S. Supreme Court.
The U.S. Supreme Court heard arguments in the case in late 2017 and considered the case for the next few months. While the case is on its face about sports betting, there are myriad other implications for the relationship between the state and the federal government arising out of the case. That’s one of the reasons the court heard the case in the first place, and one of the reasons why the decision took so long to make.
But now, after fighting a battle for most of the current decade, one that many observers thought to be hopeless, regulated, legal sports betting is alive in New Jersey.
Here you can click through the latest NJ sports betting odds on all the major sports:
With everything going on right now NJ online sports betting apps are starting to post more and more traditional sports bets like UFC, NBA futures, NHL futures & NFL props, as well as a lot more creative lines and non-traditional sports you normally wouldn’t see.
Here are some of the best sports bets today:
Top NJ sports betting apps like PointsBet Sportsbook, have posted NFL player props focused on how star players on those teams will perform.
Taking a look at DraftKings SportsbookandFanDuel Sportsbook, you can bet on where Cam Newton & Jameis Winston will be playing in Week 1 of the 2020-2021 season, as well as other remaining players.
Most online NJ sportsbooks and casinos offer bets on UFC. However, odds may differ from one NJ sports betting site to another. Check out the best NJ sports betting apps and see what special offer they have for this weeks UFC event.
YES. After a sports betting bill moved through the New Jersey legislature, Gov. Phil Murphy signed the bill into law June 11, 2018.
The first legal wager took place at Monmouth Park on June 14, and all the remaining AC properties have followed with their own NJ sportsbook: Borgata, Ocean Resort, Tropicana, Harrahs, Caesars, Resorts, Ballys, and Golden Nugget.
NJ online sports betting is also legal with many NJ online sportsbooks available. Anyone 21 years and older are allowed to place legal wagers at these licensed sportsbooks.
Legal NJ sportsbook and NJ online sports betting sites are ultimately controlled by the same license holders who currently offer casino gambling or horse race betting in the state, including the properties mentioned above that already launched sportsbooks. Note: these license holders may as well partner with other brands, as is the case with New Jersey’s legal online casino sites.
You can expect a lineup for NJ’s legal sports betting sites that closely match the kinds of gambling you can do when you’re at a Las Vegas sportsbook. Many of Atlantic City’s casinos already operate sportsbooks in Las Vegas, so the experience will be very familiar to those who have bet at Caesars in Las Vegas or MGM. Those are just two of the operators who have existing operations in other jurisdictions, meaning they already have a blueprint in place for offering legal, regulated sports betting in New Jersey.
The opportunity to bet at legal, regulated sportsbooks is one that consumers should take seriously. You never know what you’re getting when betting illegally, while legal sportsbooks in New Jersey offer the safety and security of knowing that your details are protected and that you’ll be paid when you win. We may find that many illegal sports betting sites stop serving the New Jersey market; which is what happened after NJ legalized online casino and poker games.
Sorry bettors. You must be inside state borders of New Jersey to place bets at NJ sports betting apps and sites. All legal NJ sportsbooks use geofencing technology to determine your location, so there is no way around it.
YES! You don’t need to be a resident of NJ to play at the legal NJ online sportsbooks. It’s all about your current location at the time you make the bets.
Yes, sports betting legally in New Jersey is taxable income. Depending on the online sports betting site, the operator is supposed to notify the IRS when you win a certain amount of money.
NJ online sports betting losses can actually be tax deductible if you itemize your deductions and keep detailed records of wins and losses. But the losses you deduct cannot exceed the winnings.