Rafael Devers homered twice and doubled in a run on the way to five RBIs, Matt Chapman hit his 200th career home run, and the San Francisco Giants beat the Chicago Cubs 12-3 on Wednesday night for their fourth straight win. Devers hit a solo homer in the first and added a three-run drive in the sixth for his 21st career multihomer game, third this year and second since joining the Giants in a trade from Boston in mid-June.