Polymarket promo code NJCOM: Trade $10, get $20 for MLB and NFL preseason

Several sports betting platforms are offering promotions for NFL and MLB preseason events. Polymarket provides a $20 trading bonus for a $10 first-time deposit using code NJCOM. Kalshi offers bonuses for the Jets vs. Buccaneers game via promo code NYPMAX. Additionally, Fanatics Sportsbook allows new users to receive up to $1,000 matched in FanCash for Friday's NFL preseason contests, including Dolphins vs. Commanders and Broncos vs. Falcons, by utilizing the promo code NYPOST26 during sign-up.