Boston Celtics forward Jayson Tatum tore his right Achilles tendon in Game 4 of the Eastern Conference semifinals against the New York Knicks on Monday at Madison Square Garden. The Celtics, who are down 3-1 to the Knicks, announced on Tuesday that Tatum has already undergone surgery on his Achilles.

Orthopedic surgeons call Achilles' tears some of the most difficult injuries an athlete can sustain, and recovery can take longer for pro athletes.

It's official, Jayson Tatum has suffered a torn right Achilles Tendon. The Boston Celtics confirmed the injury via a press release on Tuesday, May 13. Boston also confirmed Tatum had undergone successful surgery to repair the tear but stopped short of providing a timeline for his recovery and potential return to the rotation.