From Lancaster :
Percival figures to miss at least a few days after leaving today’s game with tightness in his left hamstring and the Rays don’t want to be short in the bullpen. They could make room for Balfour by optioning down Ben Zobrist, who was likely to get the ax anyway when Willy Aybar returned, and waiting a day or two on Aybar if necessary while they see how Percival responds to treatment.
Balfour has earned a promotion, but Gary Glover deserves an axe to the right arm some time at Durham instead of Ben Zobrist. Carrying 8 relievers seems like legitimately poor roster management, particularly when you have four former starters in the bullpen all ready (Hammel, Howell, Wheeler, Glover) and you have starters capable of going 6+ innings every night and Hammel can't find his way into a game as it is.
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In other links:
Major League Jerk has completed a mock draft with the Rays selecting the flashy Tim Beckham.
Speaking of Percival, the Sporting News had a nice piece on him yesterday.
Finally go check out SaberScouting's draft coverage.