Thanks to the NBA’s bloated 82-game schedule, it’s rare that a single game defines an entire season. Yet, the Cleveland Cavaliers’ comeback win over the Boston Celtics on Friday night could end up being one of those exceptions. Heading into the game, the 48-10 Cavaliers had a near-stranglehold on the Eastern Conference’s best record. However, a loss to the second-place Celtics would have given their opponents a 3-1 advantage in the head-to-head standings.