Celtics 75th Season February 15, 2022 6:29 pm 75th Season: Bill Russell, Wilt Chamberlain rivalry is born November 7, 1959: Bill Russell and Wilt Chamberlain meet on the court for the first time. Celtics Videos 1:46 Celtics Talk: How will Mazzulla keep C's motivated this season? 1:26 Charles Barkley: “NBA screwed up” by motivating Tatum and Brown 2:09 CNBC's Michael Ozanian: Celtics will shatter record for most expensive NBA franchise sale 1:37 Defining Moments: Tommy Heinsohn defined what it meant to be a Celtic 2:03 Report: Jeff Bezos not interested in buying Celtics