Former champion Fernando Verdasco of Spain became the last player to advance to the second round of the U.S. men's clay court championships Tuesday night with a 6-4, 6-3 victory over Argentina's Carlos Berlocq.

Verdasco, who won North America's only men's clay-court tournament in 2014, came back from a break down in the second set to close out the match by winning the last five games. He's one of seven players among the final 16 who are at least 30 years old.

But the last of the eight second-round matchups Wednesday will have the 18-year-old American Tommy Paul against 19-year-old Hyeon Chung of South Korea.