FILE - Boston Celtics coach Doc Rivers gets a Gatorade shower from Paul Pierce as the Celtics win the NBA Championship over the Los Angeles Lakers in Game 6 of the NBA basketball finals, June 17, 2008, in Boston. (AP Photo/Elise Amendola, File)

FILE - Head coach Doc Rivers and Boston Celtics team owner Steve Pagliuca, second from left, celebrate after defeating the Los Angeles Lakers in Game 6 of the NBA basketball finals, June 17, 2008, in Boston. (AP Photo/Elise Amendola, File)

FILE - Boston Celtics head coach Doc Rivers, rear, hugs his son, Duke's Austin Rivers, after Austin was selected as the No. 10 overall draft pick by the New Orleans Hornets in the NBA basketball draft, June, 28, 2012, in Newark, N.J. (AP Photo/Bill Kostroun, File)

FILE - Los Angeles Clippers head coach Doc Rivers stops the game with 9.4 seconds left during the second half of an NBA basketball game to honor Dallas Mavericks forward Dirk Nowitzki in Los Angeles, Feb. 25, 2019. (AP Photo/Alex Gallardo, File)

FILE - Boston Celtics coach Doc Rivers shouts at a referee as Kevin Garnett looks on during the first quarter of a NBA basketball game against the New Jersey Nets in Boston, Nov. 24, 2010. (AP Photo/Winslow Townson, File)

UEFA President Aleksander Ceferin looks on at the end of the UEFA Supercup football match between Champions League winners Paris Saint Germain (PSG) and Europa League winners Aston Villa in Salzburg, Austria on August 12, 2026. (Photo by FRANCK FIFE / AFP via Getty Images)

Paris Saint-Germain's Italian goalkeeper #16 Alessandro Longoni looks on ahead of the UEFA Supercup football match between Champions League winners Paris Saint Germain (PSG) and Europa League winners Aston Villa in Salzburg, Austria on August 12, 2026. (Photo by FRANCK FIFE / AFP via Getty Images)

Paris Saint-Germain's French goalkeeper #30 Lucas Chevalier looks on ahead of the UEFA Supercup football match between Champions League winners Paris Saint Germain (PSG) and Europa League winners Aston Villa in Salzburg, Austria on August 12, 2026. (Photo by FRANCK FIFE / AFP via Getty Images)