Tommy Joseph, once regarded as the Phillies' top catching prospect, will transition to first base after being hindered by a series of concussions.
The 23-year-old suffered his latest concussion in early May when a foul tip smacked his catching mask. Joseph has not played since. He had his first concussion in 2010 and another two years later.
"It's not a sad day," said Joe Jordan, the Phillies director of player development. "He's healthy. He feels good. Not only the concussion stuff, but there was some vision deficiencies that they were able to address that may have been a result of some of his concussions. Tommy's in great spirits."
Jordan said Joseph will spend the next two to three weeks on baseball activities, such as fielding ground balls and playing catch. Joseph will then be sent to Clearwater, Fla., where the Phillies can test him against live pitching. Joseph played 20 games this season with triple-A Lehigh Valley, hitting just .123 in 73 at-bats.