Sock leads 5 Americans into US Men's Clay Court quarters

Sock leads 5 Americans into US Men's Clay Court quarters
FILE - Jack Sock of the U.S. plays a shot in the doubles match between Australia's Sam Groth and John Peers, and Jack Sock and Steve Johnson at the Davis Cup World Group Quarterfinal in Brisbane, Australia, Saturday, April 8, 2017. (AP Photo/Tertius Pickard)
HOUSTON (AP) — Top-seeded Jack Sock outlasted Germany's Tommy Haas 6-4, 3-6, 6-3 on Thursday night to lead five Americans into the U.S. Men's Clay Court Championship quarterfinals.

Second-seeded John Isner, third-seeded Sam Querrey, fourth-seeded Steve Johnson and unseeded Ernesto Escobedo joined their U.S. compatriot in the final eight at River Oaks.

Sock won the tournament in 2015 for his first ATP Tour title and added victories this year in Auckland, New Zealand, and Delray Beach, Florida. He will face the winner of the late match between sixth-seeded Feliciano Lopez of Spain and Chung Hyeon of South Korea.

Isner topped Argentina's Leonardo Mayer 6-7 (5), 7-6 (3), 6-3. The 2013 winner will face Escobedo, a 4-6, 6-4, 6-4 winner over Brazil's Thiago Monteiro.

Johnson will play fifth-seeded Fernando Verdasco of Spain. Johnson edged Germany's Dustin Brown 7-6 (12), 6-4, and Verdasco beat Argentina's Nicolas Kicker 7-6 (4), 6-1.

Querrey set up a match against eighth-seeded Thomaz Bellucci of Brazil. Querrey beat Argentina's Horacio Zeballos 6-4, 6-4, and Bellucci outlasted Argentina's Maximo Gonzalez 2-6, 7-6 (5), 6-2.

 

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