Memphis, Tenn. ? Grizzlies guard Mario Chalmers will miss the rest of the season after rupturing his right Achilles tendon, and Memphis waived the veteran to clear up a much-needed spot on the roster.

The Grizzlies announced both the severity of Chalmers’ injury and the roster move Thursday night.

“He has been an important part of our success this season, both coming off the bench and when called upon as a starter,” general manager Chris Wallace said in a statement posted on the team website. “But with Mario’s season-ending injury and our already depleted roster, it became necessary to free up a roster spot.”

Chalmers was hurt with 6:57 left in the third quarter Wednesday night in Boston with the Grizzlies down 64-61 in what wound up a 116-96 loss. He was taken out of the locker room in a wheelchair.