"Ladies and gentlemen, it has been an honor being your host."
New Late Show king Stephen Colbert invited a notably hoarse Novak Djokovic to his TV program this week. Djokovic, who quipped that he was operating on two-and-a-half hours of sleep, did precisely what the cable-turned-broadcast vet asked of him, serving a tennis ball squarely into the side of a Captain America shield. See their close encounter here: