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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. NFL Sunday is the perfect time to test your instincts — and Underdog Fantasy is giving you a massive boost to do it. Right now, new users can play just $5 and get $100 in bonus entries when they sign up with this limited-time promo. Build your dream lineup with your favorite stars, predict player stat lines in Pick’em contests, or join daily drafts to compete for huge payouts. With big names taking the field and playoff races heating up, there’s no better time to get in the game. Don’t just watch Sunday football — play it your way with Underdog and turn your $5 entry into serious action! 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!
