GLENDALE, Ariz. -- Dodgers non-roster pitcher Matt Palmer underwent arthroscopic left knee surgery in Phoenix Tuesday, and he is expected to return in six to eight weeks.
The surgery to clean up a medial meniscus was performed by Dr. Brian Shafer. Palmer's knee locked up while walking after playing catch on Saturday.
Palmer had a 3.60 ERA in three spring appearances, having allowed nine runs (seven unearned) in five innings, his outings marred by several errant pickoff throws. He allowed nine hits.
Palmer, a 33-year-old right-hander, has pitched parts of the past five seasons in the Major Leagues, including briefly for San Diego last year, and he went 11-2 for the Angels in 2009 as a swing man.
Palmer was assigned to Minor League camp.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.