Parlay of the Day · 2026-06-18 3-leg MLB parlay Mariners -1.5 · Pirates -1.5 · Sox +1.5 $1,430.01 Polymarket 1Polymarket$1,430.012FanDuel$881.643Hard Rock Bet$861.144BetMGM$836.887Fanatics$817.33 Compare across all books →