The Phillies protected four prospects from possible selection in next month's Rule 5 draft by adding them to the 40-man roster Wednesday. Outfielders Aaron Altherr and Kelly Dugan, catcher Tommy Joseph and lefthander Rob Rasmussen made the cut.
Altherr, 22, and Dugan are both high-ceiling outfielders who started 2013 at single-A Clearwater. Dugan, 23, finished at double-A Reading. Both showed an improved power stroke, although each player still has a long path to the majors. Altherr was recently ranked as the organization's No. 9 prospect by Baseball America.
Joseph's future at catcher is murky because of concussion problems. The 22-year-old was limited to 36 games last season. He was cleared for winter ball and is playing in the Dominican Republic.