The Boston Celtics playoff run is in big trouble following Jayson Tatum's shocking injury that has fellow athletes, celebs and fans reacting.

Many pro athletes and others expressed support, condolences, and more following the Celtics' star's injury in Game 4 vs. the Knicks.

Trainers help Boston Celtics' Jayson Tatum (0) off the court after he was injured during the second half of Game 4 in the Eastern Conference semifinals of the NBA basketball playoffs against the New York Knicks Monday, May 12, 2025, in New York. (AP Photo/Frank Franklin II) AP The reactions came from around the NBA and around sports.