The right-hander said he was hurt Monday against the Padres during an at-bat in which he grounded out. He came out of the game two innings later.
"I got jammed with it and I couldn't feel the ball in the fifth inning and I wasn't the best," he said. "I kept competing like I used to do, but I wasn't my best. I wasn't throwing hard. Then I couldn't feel the ball and I threw four balls that weren't close to the plate."
Teheran is 4-4 with a 4.31 ERA this season.
The Braves called up RHP Luke Jackson from Triple-A Gwinnett.