St. Louis Cardinals outfielder Tyler O'Neill has been sent to Triple-A Memphis to begin his rehab assignment. O'Neill has been out since July 5 with a hamstring injury. O'Neill is hitting just .227 with three home runs and seven RBI in 2018. He has a ton of potential, but it's currently unclear if the Cardinals plan on recalling him when his rehab assignment is up. With so much uncertainty around him, O'Neill is a drop candidate in all but deep leagues.