Or he could pitch out of the bullpen, where he had most of his success with the A's.
For his career, Pomeranz is 14-24 with a 4.07 ERA in 107 games with the Rockies (2011-13) and A's. He has a 4.60 ERA in 49 career starts.
Pomeranz was the Indians' first-round Draft pick in 2010 (fifth overall) out of the University of Mississippi. He was later traded to the Rockies in August 2011 in the Ubaldo Jimenez deal. He was then sent to the A's in December 2013 as part of the Brett Anderson deal.
Torres, 22, was regarded as the A's 23rd-best prospect, according to MLB Pipeline, and slots into the Padres' Top 30 list at No. 22. He had a 2.56 ERA in two Minor League stops in 47 games as a reliever in 2015, most coming in the Class A Midwest League.
Torres was signed by the A's out of Venezuela in 2010 and was recently added to their 40-man roster. Torres, who had a 9.8 strikeout-per-nine-innings ratio in '15, has a big arm and a good breaking ball. While he was strictly a reliever last season, he could eventually start.
Alonso hit .271/.339/.386 in four seasons with the Padres, however he was often derailed by injuries in San Diego. He's appeared in more than 103 games just once since he was traded to the Padres in December 2011 from the Reds as part of the Mat Latos deal.
Alonso has been on the disabled list five times since 2013.
Rzepczynski, acquired from the Indians on July 31, went 0-1 with a 7.36 ERA in 27 games and 14 2/3 innings. Opponents hit .309 against him, and overall lefties hit .255 against during his time with the Indians and the Padres.
Alonso and Rzepczynski were non-tender candidates for the Padres, who had until 8:59 p.m. PT on Wednesday to tender contracts to their arbitration-eligible players.
Fantasy spin | Fred Zinkie (@FredZinkieMLB)
With a lifetime .757 OPS against right-handers (.653 vs. lefties), Alonso is likely destined to work the heavy side of a first-base platoon with the A's next season. Having yet to post a 10-homer season since making big league debut in 2010, the native Cuban should see his '16 fantasy value restricted to AL-only leagues.
Further down the West Coast, Pomeranz could become relevant in deep mixed leagues if he can win a spot in an unsettled Padres rotation during Spring Training. Across two seasons with the A's, the left-hander posted a 3.08 ERA, a 1.15 WHIP and an 8.5 K/9 rate while making 19 starts and 54 relief appearances.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.