SEATTLE (AP) — Justus Sheffield pitched six shutout innings for his first major league win, Dylan Moore hit a two-run homer and the Seattle Mariners beat the Colorado Rockies 5-3 on Sunday. Sheffield, one of three pitchers 24 or younger in the Mariners’ starting rotation, gave up four hits without a walk and struck out seven in his longest stint of the season. Charlie Blackmon extended his hitting streak to 13 games with a first-inning double for the Rockies.