13 seasons in, It’s Always Sunny In Philadelphia is host to one of the densest nests of callbacks and inside jokes in the world of modern TV, many of them centered on Rob McElhenney’s sweetly stupid Mac, and his various struggles to figure out what kind of person he’s actually supposed to be. (A pursuit the rest of the Gang usually does everything in their power to short-circuit, and which the show explored with shocking, poetic sensitivity in its most recent, bizarrely beautiful finale.) Among Mac’s many obsessions/visions of manhood: former Philadelphia Phillies star Chase Utley, with whom Mac has yearned to “have a catch” for many years now as part of his ongoing attempts to exorcise his daddy issues. (Keeping in mind that, according to the series, Utley is five years younger than Mac himself.)