The Celtics will be without Brandon Bass for the next 10 to 14 days because of knee inflammation.

Bass felt soreness after Boston’s loss in Toronto on Friday night and Doc Rivers learned the extent of the injury on Sunday morning when he received a call from doctor Ed Lacerte. Bass missed the Feb. 5th game against Memphis because of issues with his right knee felt against New York on Feb. 3rd.

“We knew the knee was bothering him, but then he got the treatment, and he missed that one game,” Rivers said. “There was nothing said after the Toronto game. Then Eddie called me this morning and told me he was out, and out for a while. That was a surprise.”

Two weeks from Sunday coincides with All-Star weekend, which would mean Bass could return on Tuesday, Feb. 28 in Cleveland. Bass will likely miss a total of six games.