Boston Celtics guard Isaiah Thomas reacts to hitting a 3-pointer against the Atlanta Hawks during the first half of Game 3 in a first-round playoff series Friday in Boston. (Curtis Compton/Atlanta Journal Constitution via AP)

Celtics Amir Johnson dunks as Atlanta Hawks' Kyle Korver watches during the first half of Game 3 on Friday in Boston. The Associated Press

Atlanta Hawks guard Jeff Teague, left, gets tangled up with Boston Celtics forward Jae Crowder during the second quarter in Game 3. (AP Photo/Elise Amendola)

Atlanta Hawks defenders Paul Millsap, Jeff Teague, and Al Horford, from left, triple-team Boston Celtics' Isaiah Thomas during the first half of Game 3 of a first-round playoff series Friday in Boston. (Curtis Compton/Atlanta Journal Constitution via AP)

Atlanta Hawks center Al Horford defends Boston Celtics forward Amir Johnson during the first half. The Associated Press

Boston Celtics guard Isaiah Thomas shoots next to Atlanta Hawks forward Thabo Sefolosha (25) during the first quarter. (AP Photo/Elise Amendola)

Atlanta Hawks guard Dennis Schroeder, left, knocks Boston Celtics' Marcus Smart and Isaiah Thomas to the hardwood while driving to the basket. (Curtis Compton/Atlanta Journal Constitution via AP)

Atlanta Hawks guard Dennis Schroeder (17) drives against Boston Celtics guard Evan Turner (11) as Hawks center Al Horford (15) sets a pick during the second quarter . (AP Photo/Elise Amendola)

Atlanta Hawks' Paul Millsap lays up for two against Boston Celtics Jae Crowder during the first half of Game 3 . (Curtis Compton/Atlanta Journal Constitution via AP)