Naoyuki Shimizu was taken off the active roster on Friday because of left knee pain. Because the team is concerned that Shimizu may have suffered an injury to the cartilage in his knee joint, they plan on having him get his knee checked out sometime in September. Surgery is a possibility.
UPDATE 8/27 @ 3:33pm - Shimizu is scheduled for an MRI on 9/16. Shimizu is also having problems walking up and down stairs.