The San Francisco Giants get a crack at one of the three teams ahead of them in both the National League West and wild-card races when they host the first-place Arizona Diamondbacks in a three-game series beginning Monday night. The Giants (65-67) responded to the loss of catcher Buster Posey to season-ending hip surgery with two straight wins over the Texas Rangers, keeping them within eight games of the Diamondbacks (72-58) in the West and eight behind the Milwaukee Brewers (73-59) for the second wild-card spot.