HOUSTON — Fourth-seeded defending champion Jack Sock beat top-seeded John Isner 7-6 (4), 6-3 on Saturday in an all-American semifinal in the U.S. Men's Clay Court Championship.
Sock will face Argentina's Juan Monaco in the final Sunday at River Oaks. The 23-year-old American has won 16 consecutive sets in the event dating to his first-round match last year.
"I love playing in this city, on this court. I love the clay," Sock said. "There's something about that little stadium there, it's a great atmosphere."
The 32-year-old Monaco, the 2012 winner, beat third-seeded Feliciano Lopez of Spain 6-4, 6-2.