The Giants reliever George Kontos from Triple-A Fresno Thursday as the 26th man for Thursday's doubleheader, and he will be available for the second game the San Jose Mercury News reports.
Kontos had a 3.00 ERA in 21 innings for the Giants earlier in the season, and will return to Fresno following Thursday's game. He has a 2.08 ERA in 47 2/3 innings at Triple-A.