SAN FRANCISCO -- The Giants called up reliever George Kontos from Triple-A Fresno on Saturday, optioning reliever Steve Edlefsen to the Grizzlies.
"George has been throwing the ball well down there the last five outings," manager Bruce Bochy said. "He's looked good. He's gone two innings a couple times."
Kontos was acquired from the Yankees before the season for backup catcher Chris Stewart. Kontos had a 2-0 record and a 1.71 ERA in 31 2/3 innings in 23 appearances for Fresno this season.
Edlefsen leaves the Giants with a 4.70 ERA in 15 1/3 innings. The right-hander gave up a walk-off home run to Logan Forsythe in Wednesday's 6-5 loss to the Padres.