Underdog Fantasy Promo Code: Use Code FOXSPORTS to Unlock $100 Bonus on the NBA + 50% Profit Boost

This page may contain affiliate links to legal sports betting partners. If you sign up or place a wager, FOX Sports may be compensated. Read more about Sports Betting on FOX Sports.

NBA action is back and 24 teams tip off their 2025-26 campaign tonight. All teams aiming to knock off the defending champions, the Oklahoma City Thunder. 

With injuries to stars like Tyrese Haliburton, Jayson Tatum and Paul George, the East is wide open for anybody to take. Is it the New York Knicks shot to win the East? Can the Cleveland Cavaliers be the No. 1 seed again? 

The West is stacked and everybody will be eyeing the Thunder as the team to beat. Superstars like Anthony Edwards, Luka Doncic, Nikola Jokic and Kevin Durant will all have their teams in position to compete and be the best in the West.

Underdog has NBA fans covered for the big Opening Night. When you use the code ‘FOXSPORTS’ you will claim the promo and have a chance to win $100 in bonus bets.

Underdog

How to Sign Up and Claim the Underdog Fantasy Promo Code

1. Click here or on any "Claim Bonus" button on this page to go directly to Underdog Fantasy (bonus code FOXSPORTS applied automatically).

2. Register your account: provide full name, email, date of birth, address, and last 4 of SSN to verify eligibility.

3. Enter promo code FOXSPORTS to lock in the welcome offer.

4. Deposit at least $10 using PayPal, debit card, or online banking.

5. Play $5 in pick’em or sportsbook markets.

6. Once the entry/first wager settles, Underdog credits $100 in bonus cash (usable across DFS or sportsbook). 

Check out these other promos from Underdog

• NEW! NBA 50% Super Profit Boost: Boost your SGP 50% with +100 minimum odds and at least 3 legs.

NBA Finals Winner 2025-26 Season

• Oklahoma City Thunder: +200 (bet $10 to win $30 total)
• Denver Nuggets: +650 (bet $10 to win $75 total)
• Cleveland Cavaliers: +700 (bet $10 to win $80 total)
• New York Knicks: +1200 (bet $10 to win $130 total)
• Los Angeles Clippers: +1700 (bet $10 to win $180 total)
• Los Angeles Lakers: +1800 (bet $10 to win $190 total)
• Houston Rockets: +1800 (bet $10 to win $190 total)
• Minnesota Timberwolves: +2000 (bet $10 to win $210 total)
• Orlando Magic: +2000 (bet $10 to win $210 total)
• Atlanta Hawks: +3000 (bet $10 to win $310 total)
• Golden State Warriors: +3000 (bet $10 to win $310 total)
• Boston Celtics: +3000 (bet $10 to win $310 total)
• Philadelphia 76ers: +3500 (bet $10 to win $360 total)
• Dallas Mavericks: +3500 (bet $10 to win $360 total)

MVP Odds

• Shai Gilgeous-Alexander (Thunder): +160
• Nikola Jokic (Nuggets): +300
• Luka Doncic (Lakers): +400
• Victor Wembanyama (Spurs): +1000
• Giannis Antetokounmpo (Bucks): +1400
• Anthony Edwards (Timberwolves): +2500
• Cade Cunningham (Pistons): +5000
• Donovan Mitchell (Cavaliers): +10000
• Alperen Sengun (Rockets): +10000
• Jalen Brunson (Knicks): +10000

Rookie of the Year Odds

• Cooper Flagg (Mavericks): -220
• Ace Bailey (Jazz): +900
• Tre Johnson (Wizards): +1000
• Dylan Harper (Spurs): +1300
• VJ Edgecombe (76ers): +1400
• Kon Knueppel (Hornets): +2200
• Jeremiah Fears (Pelicans): +7500
• Cedric Coward (Grizzlies): +8000
• Kasparas Jakucionis (Heat): +8000
• Ryan Kalkbrenner (Hornets): +10000

Want great stories delivered right to your inbox? Create or log in to your FOX Sports account, and follow leagues, teams and players to receive a personalized newsletter daily!