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:

Boston Celtics forward Jayson Tatum suffered a lower right leg injury in Game 4 against the New York Knicks. Tatum was lunging for a loose ball with about three minutes left in the fourth quarter when his leg gave out, causing him to crumble to the floor in pain.

There is not word as of yet exactly what the injury is, but based on the fact that it was non-contact, and Tatum was wheeled to the locker room holding the back of his ankle, there is a belief that it is something to do with his Achilles tendon. After the game, notable Celtics fan Bill Simmons reacted on his live podcast.

As the Knicks took a commanding 3-1 series lead on the Celtics and moved within a win of their first Eastern Conference finals appearance in 25 years, captain Jalen Brunson was quick to remind his teammates,