The current 25-man roster relies on too many contributions from individuals who can be considered no more than role players. Pedro Álvarez, Valencia and Gentry were acquired on minor league deals in February or March. Jace Peterson, claimed off waivers last month from the New York Yankees, has played regularly at third and in the outfield after previous utility options flopped. Susac, who was acquired in a minor trade with the Milwaukee Brewers in the offseason, has replaced Caleb Joseph as the backup catcher to top prospect Chance Sisco. The spring training decision to give Rasmus most of the at-bats in right field backfired quickly when he started slowly and suffered a lingering hip injury.