Gearrin's arrival will allow the Braves to work with seven relievers in their bullpen for the first time since sending Kris Medlen to Gwinnett to stretch out as a starting pitcher on May 29. Multiple ailments and injuries created the need for them to spend most of the past two weeks carrying three catchers.
The Braves made room on their active roster for Teheran by optioning backup catcher J.C. Boscan on Saturday.
Teheran knew he would return to Gwinnett even before he allowed four runs in 4 1/3 innings of Sunday's loss. The 21-year-old top pitching prospect was making a spot start in place of Tim Hudson, who has been nursing a sore left ankle.
"I'm not disappointed," Teheran said. "I just try to get here and do my job. If they want me to go back, I go back and do the same thing I've been doing."
Gearrin has posted a 1.65 ERA and limited opponents to a .188 batting average in 21 appearances with Gwinnett this year.