March Madness, which figures to be one of the most heavily bet events of all-time, is upon us, and legal online sportsbooks are preparing for the Big Dance by rolling out tons of great signup offers and betting promos.

Our team has scoured all of them to come up with the six best online sports betting promos for the 2021 NCAA Tournament.


1) DraftKings 64-1 Odds on Any Underdog

DraftKings Sportsbook

21+ and present in participating states. Gambling problem? Call 1-800-GAMBLER.



UP TO $1,500



DraftKings Sportsbook is rolling out the best offer of the bunch with 64-1 odds on any underdog on the first two rounds of the NCAA Tournament.

This does not have to be used on a longshot underdog. You do not need to select a 16 seed to beat a one seed. You can pick a nine seed to beat an eight seed, or even a higher seeded team that is a half-point spread underdog. It doesn’t matter. The choice is yours.

These longshot odds boosts have been popular as signup bonuses for big events before, including the Super Bowl and the start of the NFL season. So it’s no surprise DraftKings has gone back to the well in an attempt to bring more customers into the fold for the biggest sports betting event of the year. This offer is available to betters in all States where DraftKings’ online sportsbook is legal.


2) BetMGM’s $10 Free Bet for Every Game


States: KS, LA, AZ, NJ, IN, IL, CO, MI, VA, TN, IA, WV






One of the great things about the first weekend of March Madness is that sports fans can have a stake in every game. Typically brackets are busted within hours. And now the availability of online sports betting offers the opportunity to wager after the opening tip. BetMGM understands this and has rolled out one of the coolest betting promos we’ve seen: new users who bet $10 on any first round game will get a $10 free bet for every other game that day.

So, for example, if you bet $10 on the first game to tip off on Saturday, you will get $10 free to bet with for each of the remaining games that day.

Needless to say, this represents $160 in value ($10 x 16), and allows you to place a stake on the whole damn slate!

BetMGM is one of the best betting apps, backed by gaming leader MGM.


3) PointsBet’s Bet $20 to Win $150

PointsBet Sportsbook

States: NJ, IL, IN, IA, MI, CO



Bet $20 on NCAA Tourney Games

Win $150 if a Point is Scored


PointsBet offers some of the best technology in online betting. While not a household name like DraftKings or FanDuel, PointsBet’s unique proposition is its points betting feature, which allows you to win or lose a multiplier of your bet on specific over/under props.

But they are also very adept at taking your standard action, including a superior live betting experience, buoyed by an excellent customer service team for when you have a problem.

For the Tournament, PointsBet is offering new users the ability to bet $20 on the moneyline or spread for any NCAA Tournament game and get $150 in free bets.

Once any point is scored in the game you bet, you will get $150 in free bets from PointsBet. That is any single point, scored by either team, in a basketball game! There is a near certainty that this will happen in every game. Thus a $20 bet will give you $150 in free bets with PointsBet.

Plus the original $20 bet can still win on its own. This is a no brainer signup type boost from an excellent sportsbook.

The only caveat is that PointsBet is only available in fewer states than some of its peers– New Jersey, Indiana, Colorado, Iowa, Illinois, and Michigan.

For users in those states, this is a must check out. We also think you’ll like PointsBet a lot.


4) William Hill’s $2,021 Risk-Free Bet

Starting off with the Super Bowl, William Hill increased their signup promo to the single biggest bonus we’ve seen from a legal sportsbook.

It’s pretty straightforward. $2,021 risk-free bet.

Sign up, deposit money, place your first wager. You will get your bet refunded up to $2,021 if your bet loses.

Now, this might only appeal to players who are willing to wager at least $2,000. But it is entirely risk-free to do so. Keep in mind the refunded bonus money will need to be wagered again before it is eligible for withdrawal.


5) FanDuel’s $1,000 Risk-Free Bet

FanDuel Sportsbook

Must 21+ and present in participating state. Gambling problem? Call 1 - 800 - GAMBLER.



BET $5
GET $150



FanDuel Sportsbook offers a standard $1,000 risk-free bet. However, unlike competitors, the play through requirements are extremely generous. If your first bet loses and you’re refunded the money, the bonus money staked on a future bet is also repaid.

Unlike other risk-free offers that will only pay you the winnings on the bonus money, FanDuel allows you to withdrawal not only your subsequent winnings, but also the staked cash. This is the least restrictive risk-free bet offer from one of the best sportsbooks.


6) Unibet’s Bet 40 and $500 Risk-Free Bet

Unibet is a lesser known sportsbook, but they are offering new users the opportunity to play completely free just by signing up. If you’re in Pennsylvania, Indiana, or New Jersey, you’ll get $40 free to bet with without having to place a deposit. Once you do place your first deposit, you’ll get your first real money wager up to $500 risk-free. No reason not to check out literal free money.


Those are the six best betting offers for the opening weekend of the NCAA Tournament. Enjoy the games!