Casey Mize tossed six strong innings, Spencer Torkelson had two hits and three RBIs and the Detroit Tigers took the opener of a doubleheader against the Colorado Rockies 10-2 on Thursday afternoon in Denver.Justyn-Henry Malloy, Andy Ibanez, Javier Baez, Gleyber Torres and Trey Sweeney also had two hits for Detroit, which finished with 14 hits.Jordan Beck tripled and scored in the ninth for Colorado, which has lost five straight and 30 of its first 36 games this season.Mize (6-1) gave up a single leading off the bottom of the first inning, then retired the next 13 batters he faced.Nick Martini broke up the string with a one-out single in the fifth, went to third on Mickey Moniak’s double and scored on a sacrifice fly.Mize ended his day by striking out the side in order in the sixth inning. He gave up one run on three hits, fanned eight and didn’t walk a batter.He has allowed just a single run in three of his last four outings.The Tigers jumped on starter Kyle Freeland in the first inning. Zach McKinstry started the rally with a two-out single and scored on Ibanez’s double. Torkelson ripped a sharp single to left to make it 2-0.