"He's got really good fastball sink, good command and a good slider," said Dodgers vice president of scouting Logan White. "He competes his tail off and has a bulldog mentality. If he keeps battling, he may end up at the big league level out of the bullpen someday."
White compares Keener to former Dodgers farmhand Jason Frasor, who has made 547 relief appearances in the Major Leagues since 2004.
Austin Laymance is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.