The Sweet 16 is full of powerhouse showdowns, as No. 2 Texas faces No. 3 Xavier and No. 2 UCLA squares off against No. 3 Gonzaga, but the real fun will be seeing if No. 15 Princeton can keep its upset streak going against No. 6 Creighton. It promises to be unpredictable, which is why you want to grab these incredible March Madness betting promos and bonuses.
Princeton was one of the few underdogs to make it through to this round, however, as the overall trend of favorites advancing did bust a lot of brackets. That is bad news for those who stocked their brackets with upsets, so if you are in that group and want to reignite the excitement of March Madness, you can do so by wagering on Sweet 16 matchups in states where online sports gambling is legal.
Before making those wagers, you should examine the offers being made by online sportsbooks, as they typically put their best sportsbook promo codes front and center this time of year. We've compiled a list of five of the top March Madness betting promos and bonuses and have detailed the specifics of the offer and an area that particular sportsbook excels in. Claim them all and score almost $4000 in bonuses!
Best March Madness Betting Promos for Sweet 16
| Betting Promo | Code | Bonus |
| Caesars Sportsbook | SBWIREFULL | $1,250 First-Bet Insurance |
| BetMGM promo code | SBWIRE | $1000 First-Bet Offer |
| DraftKings | None needed | Bet $5, Get $150 in Bonus Bets if You Win. |
| FanDuel | None needed | No Sweat First Bet Up to $1000 |
| WynnBET | None needed | Bet $100, Get $100 |
| BetRivers | SPORTS | 2nd Chance Bet up to $500 |
The BetMGM bonus code SBWIRE is one of the top introductory promotions out there because it has a first-bet offer up to $1,000. This offer refunds a first bet loss up to $1,000, but what makes that refund even better is that you will get it divvied out equally over five bonus bets if your first bet loss is for $50 or more. A first bet loss of less than $50 lands a refund of a single bonus bet.