On Wednesday, Black said left-handers Clayton Richard and Eric Stults will follow in that series with right-hander Jason Marquis set to pitch April 5 in Colorado against the Rockies.
Black would not name his fifth starter yet, though it is believed to be a two-man race between Andrew Cashner and Tyson Ross. The Padres would not need their fifth starter until April 6 against the Rockies.
Stults will get a start Friday when the Padres face the Rangers in the first of two exhibition games in the Alamodome. Marquis will start Saturday against Texas. Both games from San Antonio will be televised on Fox Sports San Diego.
The Padres might have normally had Marquis as their No. 3 starter and Stults at No. 4, but the team likes that Marquis has had success at Coors Field. He is 10-7 with a career 3.78 ERA in 140 1/3 innings there -- most coming in 2009 when he spent the entire season with the Rockies.
Stults has a career 5.75 ERA in 20 1/3 career innings at Coors Field.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.