Zac Gallen is a mystery this year on the mound, but what's apparent lately is that he's gone over his last six starts, and the Diamondbacks have won four of them. His last start on the road in Anaheim, he allowed six runs to the Angels in a 10-5 loss, but in his last start at home, he only allowed one earned run to the Giants in an 8-2 win. Colton Gordon is going for the Astros, and he's allowed nine runs between his last two starts, and that's bad news for the Astros because the Diamondbacks' offense is red hot, winning four games in a row, and they're now .500 once again. Houston has lost seven of their last nine games. Diamondbacks win again.