San Francisco, CA (SportsNetwork.com) -
The San Francisco Giants are losing ground in the National League West, while the Pittsburgh Pirates are gaining momentum in the tightly contested Central.
Something has to give when the two clubs resume a three-game series Tuesday at AT&T Park.
The Giants are two games behind Los Angeles for the division lead and have lost five in a row, including Monday's 5-0 defeat to the Pirates. Madison Bumgarner had won his previous three starts, but was outdueled by Vance Worley and allowed five runs in four innings.