The Boston Celtics, after entering the NBA season as favorites to repeat as title winners, suffered a brutal injury to their best player. In Game 4 against the New York Knicks, superstar Jayson Tatum went down with an injury, later revealed to be a torn Achilles.

Jayson Tatum will miss at least the rest of the playoffs and beyond. The Celtics announced Tuesday that Tatum underwent successful surgery to repair a ruptured right Achilles tendon. Considering the severity of the injury, Tatum will be expected to miss a significant amount of time. Here’s the full statement from the Celtics: