Luke Kornet gives Celtics ‘tremendous’ lift off bench in Game 1 blowout of Cavs

Kristaps Porzingis’ absence could prove costly for the Celtics if his injury lingers deep into the NBA postseason. But so far, Boston hasn’t missed its unicorn big man. The Celtics demolished the Heat in their first game after Porzingis’ calf strain, then followed that up with a 25-point laugher in Game 1 of the Eastern Conference semifinals, walloping the Cavaliers 120-95 Tuesday night at TD Garden. Porzingis can thank a strong shift off the bench from backup center Luke Kornet, who delivered what head coach Joe Mazzulla called a “tremendous”...