The Colorado Rockies hope to stop a losing streak and turn around their interleague play misfortune as they open a three-game series against the Oakland A’s tonight at Coors Field. The Rockies’ current five-game losing skid includes last weekend’s sweep at the hands of the Los Angeles Angels. Those defeats dropped the Rockies to 0-6 against American League teams this season. Jeremy Guthrie gets the start on the mound for the Rockies against Oakland’s Bartolo Colon. First pitch is set for 7:40.