Arizona Diamondbacks (37-37, fourth in the NL West) vs. Colorado Rockies (17-58, fifth in the NL West) Denver; Friday, 8:40 p.m. EDT PITCHING PROBABLES: Diamondbacks: Zac Gallen (4-8, 5.19 ERA, 1.35 WHIP, 81 strikeouts); Rockies: Austin Gomber (0-0, 0.00 ERA, 0.60 WHIP, four strikeouts) BETMGM SPORTSBOOK LINE: Diamondbacks -189, Rockies +156; over/under is 12 runs BOTTOM LINE: The Colorado Rockies host the Arizona Diamondbacks on Friday to start a three-game series. Colorado has a 7-27 record at home and a 17-58 record overall. The Rockies have a 6-12 record in games when they hit at least two home runs. Arizona has a 37-37 record overall and a 17-19 record on the road. The Diamondbacks have