Celtics head coach Joe Mazzulla explained a now-viral clip of him yelling at an injured Jayson Tatum during Boston's Game 1 win over Orlando.

There is, however, some cause for concern after Jayson Tatum took a hard fall following a flagrant foul from Kentavious Caldwell-Pope. Celtics coach Joe Mazzulla, who captured some attention for telling his superstar to simply get up after the collision,

Jayson Tatum took a hard fall on Sunday as the Boston Celtics tipped off their playoff run. In pursuit of banner No. 19 and to repeat as champions, the Celtics are taking on the No. 7-seeded Orlando Magic in a first-round series.