By Kyle Wood Bet on this four-leg, same-game parlay at SI Sportsbook for Game 2 of the Eastern Conference finals between the Heat and Celtics. The Heat mounted a massive third-quarter run in Game 1 against the Celtics to retake the lead and they never relinquished it. Miami outscored Boston by 25 points in the quarter and won 118-107 behind Jimmy Butler’s 41-point masterpiece. The series resumes Thursday night with Marcus Smart potentially back in the lineup for the Celtics and Al Horford and Kyle Lowry still out. There are rather enticing odds for this same-game, four-leg parlay I put togethe…