A fan is handcuffed and escorted out of TD Garden by police after allegedly throwing a water bottle at Brooklyn Nets' Kyrie Irving as Irving left the court after Game 4 of an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. The Nets won 141-126. (AP Photo/Elise Amendola)

A security guard points as Brooklyn Nets' Kyrie Irving, right with towel, and teammates look up at a fan who reportedly threw a water bottle at him as he left the court after Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)

Brooklyn Nets' Kyrie Irving, middle, gestures towards a fan who allegedly threw a water bottle at him as he left the court after Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. Nets guard Tyler Johnson (10) looks on. (AP Photo/Elise Amendola)

Boston Celtics center Tristan Thompson (13) grabs a rebound against Brooklyn Nets' Blake Griffin, left, in the second half of Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)

Boston Celtics guard Marcus Smart (36) and Brooklyn Nets forward Kevin Durant (7) compete for a loose ball in the second half of Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)

Brooklyn Nets guard Kyrie Irving, left, looks up at the fans at TD Garden while teammate Bruce Brown (1) gestures after they defeated the Boston Celtics in Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. Irving was booed and heckled by the fans all game. (AP Photo/Elise Amendola)

Brooklyn Nets guard Kyrie Irving looks up at the fans at TD Garden after they defeated the Boston Celtics in Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. Irving was booed and heckled by the fans all game. (AP Photo/Elise Amendola)

Brooklyn Nets guard Kyrie Irving scrapes his foot on the Boston Celtics logo at mid-court after they defeated the Celtics in Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)

Brooklyn Nets forward Kevin Durant, right, is fouled by Boston Celtics guard Marcus Smart, left, as he goes to the hoop in the second half of Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)

Brooklyn Nets guard James Harden (13) drives to the hoop past Boston Celtics forward Grant Williams (12) in the second quarter of Game 4 during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)

Brooklyn Nets forward Kevin Durant (7) has a word with Nets guard Kyrie Irving just before the tip-off in Game 4 against the Boston Celtics during an NBA basketball first-round playoff series, Sunday, May 30, 2021, in Boston. (AP Photo/Elise Amendola)