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.
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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.