Daniel Hudson is scheduled to visit Dr. Lewis Yocum on Friday for a second opinion about his elbow. D'Backs doctors have diagnosed Hudson with a torn ulnar collateral ligament and Yocum is doubtful to see things differently, but second opinions are now part of the normal process for pitchers facing a potentially major procedure. The 25-year-old right-hander seems likely to undergo Tommy John elbow surgery in the near future.