FanDuel MLB Rivalry Weekend Promo Offer: Parlay Boost Builder Token for 5/17/25

The MLB's Rivalry Weekend is here, and FanDuel Sportsbook has plenty of ways to get in on the action. To celebrate Saturday's MLB slate, FanDuel Sportsbook has a special promotion for ALL customers.

Opt-In, build a 3+ leg MLB parlay, apply your Boost Builder, and get a 15% Profit Boost applied to your wager! For each additional leg, the Profit Boost will increase by 10%.

How to Use This FanDuel Promo

Here's how to claim this promo:

1. Sign up or sign into your FanDuel Sportsbook account.
2. Click "Claim Now" on the home page to claim your Boost Builder Token.
3. After clicking “Claim Now” on the promotion, you will be awarded one Parlay Boost Builder Token.
4. To use your Boost Builder Token, build a 3+ leg MLB Parlay wager in your betslip, and manually toggle-on the Boost-Builder Token in your betslip.

If you place a 3-leg parlay wager, you will have a 15% Profit Boost applied to your wager. For every additional leg you add to your parlay, you will get an additional 10% added to the Profit Boost.

Therefore, if your parlay wager consists of 4 legs, you will have a 25% Profit Boost applied to your wager. There is a maximum Profit Boost of 105% that can be applied for a parlay with 12 or more legs.

Please note that Same Game Parlay and Same Game Parlay+ wagers ARE NOT eligible for this promotion. Each leg of your parlay wager must have odds of -400 or longer (i.e. -300, +100 would qualify).

There is a maximum wager associated with use of the Boost Builder Token. Log in for more details.

Payouts from Profit Boost Tokens include boosted winnings and the initial stake. See full terms and conditions.

Who Can Claim This FanDuel Promo Offer?

The promotion is only open to individuals who are at least 21 years of age (18+ in D.C. & Puerto Rico) and are physically present in Arizona, Colorado, Connecticut, the District of Columbia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana (excluding the following parishes: Caldwell, Catahoula, Franklin, Jackson, LaSalle, Sabine, Union, West Carroll and Winn), Maryland, Massachusetts, Michigan, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Puerto Rico, Tennessee, Vermont, Virginia, West Virginia, or Wyoming during the promotion period.

How Long Will This FanDuel Promo Run?

The promotion expires at 2:00 a.m. ET on Sunday, May 18th, 2025.

Place Your Bet Today!

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21+ (18+ D.C. & PR) and present in select states (for KS, in affiliation with Kansas Star Casino). If playing causes you financial, family and occupational problems, call the ASSMCA PAS line at 1-800-981-0023 (PR). Opt in req. Minimum three leg parlay required. Bonus issued as non-withdrawable boost builder tokens. Restrictions apply, including any token expiration and max wager amounts. See terms at sportsbook.fanduel.com.