The Phillies claimed hard-throwing lefty Mauricio Robles off waivers Friday from the Seattle Mariners.
Robles, 23, lacked command as he ascended Seattle's system. He posted a 5.78 ERA across double A and triple A in 2012 while walking 63 in 71 2/3 innings primarily as a reliever. Before 2012, Robles was a starter.
The Phillies' 40-man roster is now at 37 players. Six of them -- Antonio Bastardo, Jake Diekman, Jeremy Horst, Joe Savery, Raul Valdes and Robles -- are lefthanded relievers.