Lucas Giolito gave up just three hits in six innings to help the Chicago White Sox beat the San Francisco Giants 13-4 on Sunday and complete a three-game sweep.

Selby Zavala had three hits and three RBIs, Gavin Sheets drove in three and Leury Garcia added three hits.

Joc Pederson had two hits, including an RBI double, for San Francisco, which began the day a season-high 8 1/2 games out of first place.

Giolito (5-4) pitched out of a two-out, two-on jam in the fourth, then set down the final three batters in the sixth after Pederson's RBI double.

Chicago took a 2-0 lead when Luis Robert blooped a broken-bat single to right off Sean Hjelle (0-1) in the third.

Zavala's RBI single in the fourth made it 3-0, and the White Sox loaded the bases to open the fifth. Sheets then lined a 2-2 pitch to left-center to clear the bases.

Hjelle, the Giants' 6-foot-11 reliever allowed eight hits and six runs - four of them earned - in two innings.