HOUSTON – Second-seeded John Isner advanced to the U.S. Men's Clay Court Championship quarterfinals Thursday, beating Argentina's Leonardo Mayer 6-7 (5), 7-6 (3), 6-3.
Isner set up a match against fellow American Ernesto Escobedo, a 4-6, 6-4, 6-4 winner over Brazil's Thiago Monteiro in the afternoon session at River Oaks. Isner won the 2013 title.
Fourth-seeded Steve Johnson of the United States also advanced, beating Germany's Dustin Brown 7-6 (12), 6-4. Johnson will face fifth-seeded Fernando Verdasco of Spain, a 7-6 (4), 6-1 winner over Argentina's Nicolas Kicker.
Top-seeded Jack Sock of the United States faced Germany's Tommy Haas in the night session. Sock won the event in 2015.
Fox News First
Get all the stories you need-to-know from the most powerful name in news delivered first thing every morning to your inbox.
By entering your email and clicking the Subscribe button, you agree to the Fox News Privacy Policy and Terms of Use, and agree to receive content and promotional communications from Fox News. You understand that you can opt-out at any time.