The D-backs wrap up their four-game, season-opening series against the Padres on Sunday afternoon at Petco Park at 1:10 p.m. MST on MLB.TV. Taylor Widener will start for the D-backs. The right-hander pitched well this spring and seemed a lock for at least a spot in the bullpen. When Zac Gallen went down with a hairline fracture in his forearm, Widener was tapped for the rotation. Righty Chris Paddack will start for San Diego.