Mason, a reserve averaging 8.4 points and 3.9 rebounds, said Monday night that he hurt the elbow in the Thunder's third game of the season against Minnesota and it flared up worse after their game Friday against the New York Knicks.
"We decided it's best to sit down for a few days so it doesn't get any worse and I don't hit it again," Mason said before Oklahoma City's game against the Houston Rockets. "It was the doctors' decision on that one. I couldn't talk them out of it."
The Thunder expect to re-evaluate Mason's elbow in 10 days.
"When it doesn't hurt any more, I'm good to go. It's just one of those things where it has to heal itself," said Mason, who had a season-high 18 points against Utah while playing through the injury. "It's simple treatment: ice and make sure I don't re-aggravate it and things like that. Hopefully in that 10-day timeframe, I'm good to go."