San Francisco veteran right-hander Jake Peavy pitched much better in his second start, but the Texas Rangers rallied for a 6-5 victory Monday.
Peavy, who surrendered six runs on nine hits in 1 2/3 innings Thursday against Milwaukee, yielded two runs on five hits over three innings against the Rangers.
Robinson Chirinos and Adrian Beltre had sacrifice flies off Peavy.
Kyle Blanks homered off Colby Lewis in the Giants first.
Ryan Rua went 3 for 3 with two doubles and three RBIs, including a two-run double in the Rangers' three-run ninth.