Former Celtics coach Doc Rivers is getting his championship trio back together for one more big moment in Springfield. Doc Rivers is getting the full reunion treatment at his Hall of Fame induction. Ray Allen confirmed he will join Paul Pierce and Kevin Garnett as presenters for Rivers' enshrinement into the Naismith Memorial Basketball Hall of Fame on August 15 in Springfield, Massachusetts, completing the Celtics' championship “Big Three” for the occasion. Article Continues BelowHis 1,194 career wins rank sixth all-time among NBA head coaches, trailing only legends like Gregg Popovich, Don Nelson, and Lenny Wilkens. Pierce, Allen, and Garnett are all already enshrined as players, with Allen inducted in 2018, Garnett in 2020, and Pierce in 2021.