The Michael Lorenzen deal was Dave Dombrowski's big splash at the deadline, but he also made a strange under-the-radar deal, sending the struggling Bailey Falter to Pittsburgh in exchange for Rodolfo Castro.
The fit never made much sense, and Castro really struggled in his short time with the Phillies. He rarely saw the field, and when he did, he was not productive, recording three hits in 30 at-bats with the club. He began his Phillies career hitless in his first 12 at-bats with six strikeouts.
Castro's numbers overall this season were not good as he put up a .619 OPS in 227 at-bats with the Pirates and Phillies, and he was unable to crack the postseason roster.
The reason the Castro trade was a strange one was because of the kind of hitter he's always been. He might be a switch-hitter, but Castro is much better against lefties than he is against righties. When facing a left-handed pitcher Castro has an .858 OPS in his career. Against righties, that falls to .557. Yes, a 300-point gap. The Phillies already had Edmundo Sosa on the roster who is very capable against left-handed pitching, and they also had Cristian Pache filling in against lefties in the outfield.
Castro can be optioned and isn't in arbitration yet, making it more likely that he'll be kept around than the others, but there's not much of a role for him on this team really ever unless they're just completely decimated with injuries.