From mlb.com:

Arizona Fall League sensation Grant Desme, former Angels third baseman Dallas McPherson and ex-Reds reliever Marcus McBeth are among 19 players extended invitations to Spring Training on Monday by the A's.

McPherson, 29, missed all of the 2009 season with back problems, but he has the most extensive Major League experience of the six free agents among the 19 signed to Minor League contracts by Oakland.

Read the full story here.