Celtics start camp with major changes

Al Horford has officially left the Boston Celtics, signing a multi-year deal with the Golden State Warriors and posting a heartfelt farewell to fans. Meanwhile, Jayson Tatum shared new workout footage just four months after Achilles surgery, impressing teammates and even Kevin Durant.

It’s a summer of turnover and hope—Horford’s gone west, Tatum looks stronger than ever, and the new ownership shuffle begins. In short: the Celtics lost one big man but gained a storyline so dramatic it makes most Netflix series look underwritten.