Arizona at San Francisco

San Francisco will try to snap the Diamondbacks' four-game winning streak with Chris Stratton making his eight start of the season. Stratton had a good run in late July and August when the Giants won four starts in a row by the right-hander, and Arizona hitters have a collective batting average of just .184 against him in 38 at-bats. Taijuan Walker pitched six innings in a 4-2 loss to Colorado on Tuesday, and he issued five walks in six innings while not getting the decision. Walker has faced the Giants four times this year and allowed 11 runs (10 earned) on 22 hits in 23 1/3 innings. Arizona has lost five of Walker's last seven starts against teams with losing records. Go with the home underdog Giants.