While Cody Allen is certainly very good at throwing the baseball, he's not quite an elite closer. But he's interesting, and successful in his own way.
Since 2013 the back end of the Cleveland Indians bullpen has featured Cody Allen in some role or other. His first full year when he gave the club 70.1 innings, he worked with Bryan Shaw and Joe Smith to lock down the seventh and eighth innings in preparation for the fickle Chris Perez, and was handed the closer role in 2014 after Perez was handed his walking papers.