The Phillies on Wednesday added four players to their 40-man roster, general manager Ruben Amaro Jr. announced.
After selecting the contracts of outfielders Aaron Altherr and Kelly Dugan, catcher Tommy Joseph and left-handed pitcher Rob Rasmussen, the Phils now have 37 players on the 40-man roster.
Altherr spent last season with Single A Clearwater and was a midseason and postseason All-Star selection. He hit .275 with 36 doubles, six triples, 12 home runs and 69 RBIs in 123 games.
The 22-year-old also led the Florida State League in doubles and ranked in the top five in hits, triples and total bases. The Phillies selected Altherr in the ninth round of the 2009 draft.
Dugan split last season between Clearwater and Double A Reading. In 112 games between both levels, he batted .291 with 24 doubles, four triples, 20 homers and 59 RBIs.
The 23-year-old was honored by the Phillies as the Player of the Month for May last season. Dugan was selected by the Phils in the second round of the 2009 draft.
Joseph, who was acquired by the Phillies from the San Francisco Giants in the Hunter Pence trade on July 31, 2012, played just 36 games last season because of a concussion. He hit .209 with three home runs at Triple A Lehigh Valley, where he began the season, before being sidelined.
The 22-year-old is currently participating in the Dominican Winter League with Estrellas de Oriente. He's hit .231 with a double and one RBI through five games.
Rasmussen was acquired by the Phils in the trade that sent Michael Young to the Los Angeles Dodgers on Aug. 21. He went 3-11 with a 4.11 ERA in 28 games between Double A Chattanooga and Triple A Albuquerque last season.
The 24-year-old was originally drafted by the Miami Marlins in the second round of the 2010 draft.