Federer, Zverev play "The Greatest Match" in Mexico City

Roger Federer and Alexander Zverev took their Latin American tour to Mexico City on Saturday, packing the Plaza de Toros—a literal bullring—with a tennis-record 42,517 people for what was billed as "The Greatest Match."

The sheer scale of the event was beyond a spectacle, and it surpassed the record held by Serena Williams and Kim Clijsters, of 35,681 fans.

It's hard to call a giggly exhibition "the greatest" in earnest, but it was a great time all around, especially for the fans in Mexico, who don't get many opportunities at all to see Federer.

"I love you, viva México," Federer said after the match, thanking the enormous crowd.

Making the event all the sweeter, the fans got to see a comeback Federer victory, 3-6, 6-4, 6-2.

There was a doubles undercard event as well, with the Bryan brothers taking on Mexico's Santiago Gonzalez and Miguel Angel Reyes-Varela—the latter winning in a match tiebreak.

So far, Federer and Zverev have hit Santiago, Chile, and Buenos Aires, Argentina, in addition to Mexico City. They were scheduled for Bogota, Colombia, on Friday, but a curfew was imposed amid protests in the city.

The tour's final stop was on Sunday in Quito, Ecuador.

The match was played at an altitude of 9,350 feet, and marked the last in a series of five stops, which included Santiago, Buenos Aires, Bogota, Mexico City and Quito (the Bogota match was cancelled at the last minute due to ongoing protests in Colombia).

The Latin American whirlwind ended on a high though, quite literally, in Quito.