Athletics left-hander Dallas Braden received an injection of platelet-rich plasma in his strained, surgically repaired throwing shoulder and will not do any baseball activity for three weeks. Manager Bob Melvin said Tuesday that Braden received the shot during Monday's examination in New York with Dr. David Altchek, and will be limited to strengthening exercises and rehab until he is cleared to resume his throwing program. Altchek operated on Braden's shoulder last May 17.
