I've started a list of things Roy can't cover. Feel free to add to this list at any time.
Roy can't cover a tight-end running a seam route.
Roy can't cover a receiver in the slot.
Roy can't cover a tight-end running a fade pattern.
Roy can't cover a receiver running a go route.
Roy can't cover a fullback on an out pattern.
Roy can't cover a steak with A-1 sauce.
Roy can't cover a birdcage with a newspaper.
Roy can't cover a parade with Good Morning America.
Roy can't cover a sundae with cherries and nuts.
Roy can't cover a bowl with a lid.
Roy can't cover a camel running a comeback route with a blindfold on.
Roy can't cover Al Pacino in the flats carrying two midgets.
Roy can't cover a one-piece swimsuit with a towel.
Roy can't cover the financial market with the Wall Street Journal.
Roy can't cover "Sweet Home Alabama" with a karoake band.
Roy can't cover Michael Jackson while doing the moonwalk in the sand