Isner advances at U.S. Clay Court event

April 10, 2013 at 1:43 AM

HOUSTON, April 10 (UPI) -- Fifth-seeded John Isner needed a first-set tiebreaker but advanced with a victory Tuesday in first-round play at the U.S. Men's Clay Court Championship.

Isner, who finished second in last year's event at Houston, moved on with a 7-6 (7-4), 6-4 defeat of fellow American Ryan Harrison at River Oaks Country Club.

He now goes on to face wild card Jack Sock of the United States, who posted a win over fellow American Bradley Klahn 7-6 (7-3), 6-3.

Joining him in the second round was Spain's Fernando Verdasco, who also had to get past a first-set tiebreaker before prevailing over American wild card Steve Johnson 7-6 (7-5), 6-2.

Elsewhere Tuesday, seventh-seeded Paolo Lorenzi of Italy downed Austrian qualifier Gerald Melzer 6-2, 6-2 and Robby Ginepri dispatched No. 8 fellow American Michael Russell 6-2, 6-2.

Italian Flavio Cipolla and Lithuanian Ricardas Berankis also recorded wins on Day 2 in Houston.

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