Parlay of the Day · 2026-07-31 3-leg MLB parlay Giants ML · Mariners ML · Over 7.5 $1,167.17 Polymarket 1Polymarket$1,167.172Kalshi PM$1,108.263BetRivers$1,036.594Caesars$1,024.636FanDuel$984.92 Compare across all books →