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Scott Proefrock has many years as an assistant general manager. Proefrock served in the role for the Tampa Bay (Devil) Rays from 1997 through 2005 and held the role with the Phillies from 2008 until September 10, when Ruben Amaro Jr. was let go. Since then, Proefrock has held the "interim general manager" tag.
When new Phillies president of baseball operations Andy MacPhail was hired, he was brought in to fill a much different role than team presidents past.