The matches on tap for today in the Cincinnati Masters event feature all of the top players in the world: Nadal, Federer, Djokovic, Murray etc.
This reminds me of my first visit to the Stratton Mountain ATP event in 1986, when I saw all the headliners play in sequence on the stadium court: Ivan Lendl, Boris Becker, Jimmy Connors, John McEnroe (against his doubles partner Peter Fleming), and then top-tenner Tim Mayotte against an unknown 16-year-old named Andre Agassi. Hearing the name, I expected some Swiss journeyman to show up on court. When he was introduced as a teenaged Las Vegan training at Bollettiieri's, I thought he would be cannon fodder for Mayotte. But that match turned out to be Agassi's breakthrough win and the tournament was his breakthrough event (he lost to McEnroe a couple rounds later but was on everyone's radar as a future star at that point).
