"It's just unacceptable for me to come in and not throw strikes and make that a competitive at-bat," Gearrin said. "Very frustrating for me."
Gonzalez draws winning walk in 9th, Rockies beat Giants 4-3 →
Gearrin, a reliever who has 77 career appearances, says he has not yet scheduled the surgery or selected the doctor.
Braves reliever Gearrin to have Tommy John surgery →