The former No. 6 had been 0-4 in tour-level matches since returning from a seven-month foot injury lay-off in March.

What do you believe in? Youth or experience? Ranking or form? Keep these questions in mind during Tuesday's three must-see matches.

The No. 6 seed had the final proverbial word when he wrapped up a 6-4, 7-6 (5) victory on Tuesday.

With some biggest stars in the men’s game off the tour, their countrymen are making names for themselves.

The 19-year-old was ranked No. 79 on this day a year ago.

Three of the four semifinalists of the ATP 250 event in Santiago are South American players.

The Buenos Aires native snapped an 11-match losing streak and celebrated by donning the legendary Napoli player’s classic Argentina shirt.

Brothers Elias Ymer and Mikael Ymer keep coming through for Sweden in the Davis Cup Finals.

Fritz is one of the better hard-court players in the world, but he has been dealing with some foot pain—and Baez is the last player you want to face when you're not at 100 percent.

Kyrgios had held 73 service games in a row until Sebastian Baez broke him late in the first set of their first-round match in Montreal—but the Australian didn’t get broken again en route to a 6-4, 6-4 victory over the Argentine.