The notion of eternal recurrence isn't invoked when it comes to sports, probably because we think of our games as being decided by some combination of luck and skill. To start citing, say, "Battlestar Galactica" and its mantra of "everything that's happened will happen again" is to be fatalistic about something that is anything but. Yet, when you think about the intrinsic link between the careers of Clayton Kershaw and Sandy Koufax, it’s easy to think there might be something to this whole eternal recurrence business.
Think about it. For a stretch of five years during the 1960s, Koufax was as dominant as any pitcher has ever been for a span of seasons that long.