We've got a big Saturday lined up on the diamond with some intriguing MLB matchups, including Red Sox-Giants and Mets-Phillies. Step into the batter's box and sign up for a new account using the BetMGM bonus code ROTOBG150 to get up to $150 in bonus bets.
This welcome offer from BetMGM is only available for new customers in Colorado, New Jersey, Pennsylvania and West Virginia using one of the top sportsbook promos when getting started. After you sign up for an account, place a first-time wager of $10+, and if it wins, you will get $150 in bonus bets. No bonus bets will be awarded if your first wager doesn't win.
New customers, located in other BetMGM states, can use the BetMGM bonus code ROTOSPORTS (ROTOBONUS for KY & MA) for a welcome offer worth up to $1,500. Just place a first-time $10+ wager, and if it doesn't win, you will get bonus bets back in the amount of your first wager, up to $1,500. If you are victorious on your first wager, you will simply keep the winnings.
Get started with one of the best sports betting apps today and get a welcome offer to get you started on the fast track with bonus bets. If you are eligible for the ROTOBG150 welcome offer, be sure to pick an MLB game that has an easier time than usual, like the Diamondbacks over the Rockies, or even going over the total with one of the best hitting environments in baseball. If you are using the ROTOSPORTS welcome offer, you can take more of a risk on your first bet since you'll get bonus bets for a losing wager.
BetMGM Bonus Code ROTOBG150 - Sign Up For $150 with Winning $10 Bet
| 💵 BetMGM Bonus Code | ROTOBG150 / ROTOSPORTS |
| 🎁 BetMGM Promo | Bet $10, Win $150 (CO, MI, NJ, PA, WV) / First-Bet Offer Up to $1,500 |
| 📲 Mobile App Availability | iOS and Android devices |
| 💲Minimum Deposit | $10 |
| ✅ Bonus Code Verified On: | June 21, 2025 |
Join one of leading sports betting sites in minutes. Here's how to activate an account using the BetMGM bonus code ROTOSPORTS or BetMGM bonus code ROTOBG150 offer:
- Tap any of the BET NOW buttons on this page; you will be directed to the BetMGM landing page, where you'll select your location.
- After getting to the main page, tap the Sign-Up button, then use an email and create a password for your account. Provide the requested personal information.
- Enter ROTOBG150 as the BetMGM bonus code if you are in CO, MI, NJ, PA or WV or ROTOSPORTS (ROTOBONUS in KY & MA) as the BetMGM bonus code if it's not already filled in for you.
- Make a deposit of at least $10. You can use payment options like a credit card or an online bank and note that BetMGM is also one of the top PayPal betting sites.
BetMGM Bonus Code Promo: Terms & Conditions for Saturday, June 21
After using the BetMGM bonus code ROTOBG150 to open an account, choose from any set of odds and place a $10 wager. If it wins, you will get $150 in bonus bets, as three $50 credits.
With the BetMGM bonus code ROTOSPORTS, pick any set of odds and place your first wager on one of the top NBA betting apps. If that bet loses, BetMGM will refund you with bonus bets. You'll get five bonus bets, each worth 20% of your original wager, if you lost $50 or more. If your loss was for less than $50, you'll get one bonus bet.
Bonus bets awarded via either welcome offer can be used on any set of odds in any sports betting market. The bonus bets expire after seven days and have a 1x playthrough requirement. The BetMGM bonus code ROTOBG150 and the BetMGM bonus code ROTOSPORTS help you get your sports betting adventure off to a great start. Tap a BET NOW button and begin betting today with one of the leading NBA betting promos.
BetMGM Bonus Code ROTOBG150 for Red Sox-Giants, other MLB Odds
BetMGM is one of the biggest fan-favorites for MLB odds, and it's easy to see why with its worthwhile rewards system. Sign up tonight with one of the BetMGM bonus codes and take advantage of all it has to offer:
BetMGM Bonus Code Best Bets for Saturday, June 21, 2025
- MLB: Red Sox at Giants, 4:05 p.m. ET; check the latest World Series odds to see where these teams stand after Boston traded slugger Rafael Devers to San Francisco last weekend.
- MLB: Mets at Phillies, 7:15 p.m. ET; there are plenty of candidates in NL MVP odds playing today, including Francisco Lindor of New York and Kyle Schwarber of Philadelphia.
- MLB: Nationals at Dodgers, 10:10 p.m. ET; one of the leading MLB betting sites is perfect to use ahead of this National League showdown.
The Red Sox and Giants play the second game of their three-game series at Wrigley Field this weekend. Slugger Rafael Devers didn't have to wait long to face his former team, as Boston comes to town less than a week after dealing their perennial All-Star. Be should to use one of the best MLB betting promos to wager on this interleague game.
Under the lights, we'll get a rematch of last year's NLDS with the Mets taking on the Phillies. This is another game where the pitching doesn't have a particularly optimistic outlook. Granted, the overall numbers for Griffin Canning and Mick Abel look great, after a strong beginning to the season, Canning has allowed 10 runs over his last two starts (9 1/3 innings). Abel had the benefit of facing opponents like the Pirates and Marlins in two of his four MLB starts since being called up, but we know the top of the Mets' order is one of, if not, the best, in baseball.
You can get in on all the exciting Saturday baseball action. Start by clicking the BET NOW button and use the BetMGM bonus code ROTOBG150 or the ROTOSPORTS code when you open an account and be on your way to bonus bets.
This article is part of our Betting Promotions series.
