BetMGM Big Fly Fridays
Every Friday, BetMGM is offering baseball bettors a chance at huge prizes. Through their Big Fly Fridays promotion, if the player a user bet on to hit an anytime homerun has the longest dinger of the day, they'll be eligible for a share of $100,000 in bonus bets.
Similar to FanDuel's Dinger Tuesdays or Bet365's Saturday Sluggers, this promotion is a big win for those of you who get a kick out of betting on home run hitters. In fact you could probably manage to find a promo 7 days a week at this point!

To join, you need to sign up with BetMGM. On a Friday, place a home run bet with at least +100 odds, apply the Big Fly Fridays Qualifying Token, and wager at least $10.
Only the first bet using the token that day, placed by 10:00 pm EST, qualifies. That means, you're cut off once the west coast games start.
Any bonus bets you win as part of this promotion must be used within 7 days.
Big Fly Fridays are an awesome promotion this season, allowing baseball to grab a potentially huge share of bonus bets, especially when combined with the offers from other operators.
How to Enter BetMGM Big Fly Fridays
- Sign up with BetMGM
- Add an MLB home run bet (min. +100 odds) to your Bet Slip
- Apply the Big Fly Fridays Qualifying Token
- Stake at least $10
- Place your bet!
Recent Big Fly Friday Winners
Date | Player | HR Distance | Winners | Bonus Bet Amt. |
---|---|---|---|---|
August 9, 2025 | Bobby Witt Jr. (Royals) | 456 feet | 51 | $981 |
August 1, 2025 | Oneil Cruz (Pirates) | 451 feet | 770 | $130 |
July 25, 2025 | Austin Slater (White Sox) | 419 feet | 0 | $0 |
July 18, 2025 | Jordan Beck (Rockies) | 448 feet | 3 | $33,334 |
July 11, 2025 | Zach Neto (Angels) | 447 feet | 5 | $20,000 |
July 4, 2025 | Denzel Clarke (Athletics) | 471 feet | 3 | $33,334 |
Key Terms & Conditions
- Promotion Overview: Big Fly Fridays is a weekly BetMGM Sportsbook promotion where participants place MLB Player Home Run prop bets using a Big Fly Fridays Qualifying Token. If the chosen player hits the longest home run of the day, participants share a $100,000 Bonus Bets jackpot.
Eligibility Requirements: Open to existing BetMGM Sportsbook account holders who are 21+, located in eligible states (excluding NY, NV, PR), not self-excluded, and not employees or close relatives of BetMGM or affiliates.
Qualifying Bets: Place a minimum $10 straight pre-game wager on an MLB Player Home Run prop with at least +100 odds using the Big Fly Fridays Qualifying Token. Only the first bet per day counts.
Promotional Period: Every Friday from July 4, 2025, 12:00 AM EST through August 29, 2025, 11:59 PM EST, unless BetMGM ends it earlier.
Bonus Bets Details: Jackpot is paid in Bonus Bets, which expire 7 days after issuance. Bonus Bets can only be used for eligible wagers on BetMGM Sportsbook and cannot be transferred, withdrawn, or redeemed for cash.
Sharing the Jackpot: If multiple participants pick players with the longest home run, the $100,000 Bonus Bet jackpot is split among them.
Account & Registration: Existing BetMGM Casino or Poker account holders can use the same credentials. New users must create a verified BetMGM Sportsbook account to participate.
Restrictions & Limitations: Bonus Bets can only be used once, for one straight bet, parlay, or same-game parlay. Using “Bonus Bets” or other promotional tokens for a qualifying wager disqualifies the bet. Early cash-outs, edits, or cancellations void eligibility.
Game Eligibility & Odds: Any MLB game counts. Qualifying bets require minimum +100 odds. Bonus Bets winnings do not include the stake amount.
Legal & Safety Notices: Bet responsibly. Problem gambling resources are provided (e.g., 1-800-GAMBLER). Promotion is void where prohibited. BetMGM reserves rights to modify, suspend, or terminate promotion for any reason, including fraud or technical issues.