Underdog Fantasy Promo Code 'COVERS' Lets New Users Play $5, Get $100 On Game 3 Of Jays-Mariners

Use Underdog Fantasy promo code COVERS for $100 bonus on Blue Jays vs Mariners Game 3. Claim your welcome offer for Wednesday's ALCS matchup.

Peter Clarke - Senior Editor at Covers.com
Peter Clarke • Senior Editor
Oct 15, 2025 • 11:30 ET • 3 min read
Underdog Fantasy promo code for Blue Jays vs Mariners
Photo By - Use Underdog Fantasy promo code "COVERS" to play $5, Get $100. - IMAGN IMAGES

The Underdog Fantasy promo code COVERS provides new users with a $100 bonus for Wednesday's pivotal Game 3 between the Blue Jays and Mariners in the American League Championship Series. With Seattle leading 2-0 after victories in Toronto, the series shifts to Seattle where the Blue Jays face elimination pressure. This $100 bonus offer gives bettors extra value for October 15 ALCS action, joining other competitive sportsbook promos available for postseason baseball.

Play $5, Get $100
Code: COVERS

Underdog Fantasy promo code COVERS offer details

The Underdog Fantasy promo code COVERS requires new users to make a $5 entry to receive $100 in bonus credits within 72 hours. This welcome offer applies to daily fantasy contests featuring Wednesday's Blue Jays vs Mariners matchup, where Shane Bieber faces George Kirby in a must-win game for Toronto. The bonus carries a 1x wagering requirement that must be completed within 14 days of receipt.

Key terms include account verification requirements before withdrawals and a 60-day expiration on bonus funds. Users must be at least 19 years old, with Virginia requiring 21+, and the offer excludes residents of Maryland, Michigan, Pennsylvania and Ohio. Whether building lineups through draft contests or making pick'em predictions on player performances, the bonus enhances your Game 3 betting experience as the Blue Jays attempt to avoid falling into a 3-0 series deficit.


Use the correct Underdog promo code for your state

Underdog Fantasy Promo Code Eligible States
 "COVERS" AK, AL, AR, AZ, CA, CO, FL, GA, IL, IN, KS, KY, MA, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY

How to claim your Underdog Fantasy bonus

Claiming your Underdog Fantasy bonus for Blue Jays vs Mariners Game 3 requires four simple steps. First, download the Underdog Fantasy app and complete registration with your personal information and mobile number verification. Second, make a minimum $5 deposit using your preferred payment method and enter promo code COVERS when prompted. Third, place a $5 entry into any available contest featuring Wednesday's ALCS matchup between Toronto and Seattle. Finally, your $100 bonus will automatically appear in your account within 72 hours, ready for additional contest entries as the series continues.


Affiliate Disclosure: Our team of experts has thoroughly researched and handpicked each product that appears on our website. We may receive compensation if you sign up through our links.

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Peter Clarke - Covers
Senior Editor

Peter Clarke is dedicated to keeping bettors informed about the biggest sports betting events, such as the Super Bowl and March Madness, and the best way to cash in on sportsbook promos. He's also always on top of the latest welcome offers from the biggest sportsbooks, so he can share the best deals and the most exciting games to use them on every day.

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