The Boston Celtics are set to fight for their season on Wednesday night against the New York Knicks. After losing Game 4 and superstar Jayson Tatum to a torn Achilles, the Celtics are hanging on by a thread.

Hauser suffered an ankle sprain in the Celtics’ Game 1 loss last week against the Knicks after he landed awkwardly following a 3-point contest of OG Anunoby. He went through an intense workout on Monday with coaches on the floor at Madison square Garden.

The New York Knicks enter the Game 5 matchup of the Eastern Conference semifinals with a 3-1 lead over the Boston Celtics.

The Celtics will be noticeably short-handed, as they will be without their All-NBA forward Jayson Tatum. Tatum went down in the closing minutes of Game 4 with a non-contact injury, later deemed to be a ruptured Achilles.