Athletics righty Jarrod Parker will visit Dr. James Andrews next Monday to determine the severity of his latest elbow injury, writes John Hickey of the Bay Area News Group. Parker fractured the medial epicondyle in his right elbow over the weekend in what was supposed to be one of his final rehab appearances before being activated off the disabled list. The medial epicondyle is one of the two bones to which a replacement ligament is grafted in Tommy John surgery, and the A’s do not yet know if Parker’s new UCL remains intact.