Squad rotation is now sadly a pivotal part of the FA Cup third round experience. Each year most Premier League clubs and those in the Championship striving for a slice of the cash cow make sweeping changes to their starting XIs, with the famous old competition suffering as a consequence.
Of course it wasn't always this way. There are a number of tales from the distant past of marathon seasons, cup replay sagas, and players out on their feet as managers without the luxury of vast squads attempted to drain every drop of energy from their reserves.