ESPNJack Sock tops Matthew Barton, makes US clay court quartersESPNHOUSTON — Defending champion Jack Sock beat Australia’s Matthew Barton 6-2, 7-6 (5) on Thursday to reach the quarterfinals in the U.S. Men’s Clay Court Championship. Sock, the No. 4 seed, won last year at River Oaks for his first ATP Tour title. He …John Isner ousts Denis Kudla at US men’s clay court championshipsUSA TODAYTeenager Hyeon Chung makes the Clay Court quarterfinalsChron.comJohn Isner – Chung HyeonEurosport.com AUSports Chat Place -Houston Chronicle -Examiner.com -NH Voiceall 24 news articles Read More

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