What I loved about Koji as a closer was that he didn't mess around. There was almost never any drama in the 9th inning, unlike there is with Kimbrel. Kimbrel is frustrating to watch sometimes. That said, in closing situations, he has mostly gotten the job done. It isn't always pretty, but he gets it done. For that reason, I can't see Farrell pulling him out of that role, unless he really loses it.