Underdog Promo Code SBRBONUS: Get $75 in Bonus Entries for World Baseball Classic, NBA, NHL, NCAAB (Mar. 8)
Sunday's action-packed sports slate featuring NBA playoff contenders, college basketball's final regular season push, and World Baseball Classic pool play creates the perfect opportunity to claim your Underdog promo code bonus. New users can secure $75 in fantasy bonus entries by using code SBRBONUS and making just a $5 entry on Sunday, March 8 contests.
Whether you're targeting the Celtics-Cavaliers Eastern Conference showdown, college basketball bubble teams fighting for tournament positioning, or international baseball stars competing in WBC pool play, Underdog ranks among the best prediction market apps for fantasy contests. The welcome bonus requires the promo code SBRBONUS to activate the offer.
Play $5, Get $75 in Bonus Entries
Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit http://www.ncpgambling.org . NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)
Each product featured on our website has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.
Underdog promo code overview
| 📲 Underdog Promo Code | SBRBONUS |
| 💰 New User Offer | Play $5, Get $75 in Bonus Entries |
| 📄 Terms and Conditions | Must be 18 or older to play (19+ in AL, NE; 21+ in AZ, MA, VA) Restricted in ID, LA, ME, MT, NY, NV, WA (also restricted in Ontario). |
| 📅 Bonus Verified On | March 8 |
| ✅ Information Confirmed By | Devon Taylor |
How to claim the Underdog promo code for WBC, NBA, NHL, CBB
Claiming your Underdog Fantasy bonus for Sunday's games follows a straightforward process that gets you in the action quickly.
- Download the Underdog app and complete registration with your personal information and mobile number verification.
- Make your first deposit of at least $5 using your preferred payment method.
- Enter promo code SBRBONUS during the deposit process to activate your bonus.
- Place a minimum $5 entry into any available contest featuring Sunday's NBA, college basketball, or World Baseball Classic action.
- Receive your $75 in fantasy bonus entries within 72 hours of your qualifying entry.
Underdog promo code terms & conditions
The Underdog promo code SBRBONUS delivers substantial value for new fantasy players looking to maximize their Sunday sports action. After placing your initial $5 entry on contests like Celtics-Cavaliers player props or World Baseball Classic matchups, you'll automatically receive $75 in fantasy bonus entries credited to your account within three days.
Your bonus entries come with specific terms that enhance your playing experience:
- Bonus entries carry a 1x wagering requirement that must be completed within 14 days
- You have 60 days to use your bonus entries before they expire
- Account verification is required before withdrawing any winnings
- The offer excludes residents of Maryland, Michigan, Pennsylvania, and Ohio
For example, if you enter a $5 NBA contest predicting whether Jayson Tatum exceeds his points projection against Cleveland and win $9, you keep your winnings plus still have your $75 bonus to use on additional contests. Even if your initial Tatum pick falls short, you still receive the full $75 bonus to target other Sunday matchups like the Lakers-Knicks game or World Baseball Classic pool play featuring Japan, South Korea, Dominican Republic, and Team USA. The bonus entries work exactly like cash entries, giving you multiple opportunities to build your bankroll across Sunday's diverse sports offerings.
Affiliate Disclosure: Not intended for use in MA. Each betting site featured on SBR has been meticulously researched and selected by our team of experts. If you sign up through our links, we may get a commission.
Gambling Problem? Call 1-800-GAMBLER. Hope is here. GamblingHelpLineMA.org or call (800) 327-5050 for 24/7 support (MA). Call 1-877-8HOPE-NY or text HOPENY (467369) (NY).21+ and present in select states. Gambling Problem? Call 1-800-GAMBLER (CO, IA, KY, MI, NJ, OH, PA, IL, TN, VA, VT), 1-800-NEXT-STEP or text NEXTSTEP to 53342 (AZ), 1-888-789-7777 or visit ccpg.org/chat (CT), 1-800-9-WITH-IT (IN), 1-800-522-4700 or visit ksgamblinghelp.com (KS), 1-877-770-STOP (LA), visit www.mdgamblinghelp.org (MD), 1-800-522-4700 (WY), or visit www.1800gambler.net (WV).
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