Programming note: Rockies-Giants coverage starts tonight at 6:30 with Giants Pregame Live on Comcast SportsNet Bay Area
The Giants optioned first baseman Adam Duvall to Triple-A Fresno, and recalled relief pitcher George Kontos, the team announced Monday afternoon.
Over 21 games with the Giants this season, Duvall is hitting .180 with two home runs and three RBI.
He has struck out 18 times in 65 plate appearances.
Kontos, who last pitched for the Giants on July 25, is 3-0 this season with a 3.00 ERA.
San Francisco's bullpen allowed 12 runs on 14 hits over 2.2 innings in Sunday's 14-6 loss in Washington.