The Arizona Diamondbacks, on the heels of a series loss in Toronto, will travel to Coors Field to take on the Colorado Rockies in a three-game set. First pitch is set for 5:40 p.m. Arizona time. The Diamondbacks float back to .500 at 37-37, while the Rockies are currently the hottest they’ve been all season, going 8-8 in their latest stretch. Right-hander Zac Gallen’s season has been anything but satisfying, to both fans and Gallen himself.