Isner into 3rd round in Winston-Salem

08/19/2014 7:45 PM

08/19/2014 7:45 PM

Winston-Salem, NC (SportsNetwork.com) - Two-time champion John Isner beat fellow American Bradley Klahn in the second round of the the Winston-Salem Open on Tuesday.

The top-seeded Isner, who is from Greensboro, North Carolina, fired 13 aces in a 7-6 (7-5), 6-2 win. Isner won the tournament in 2011 and 2012.

No. 2 seed Kevin Anderson also advanced to the third round in the final tuneup for the U.S. Open while former top-10 star Tommy Robredo was ousted in an upset.

Anderson, the 6-foot-8 South African, held off Adrian Mannarino 6-3, 2-6, 6-4 on the hardcourts at Wake Forest University and moved on to face Sam Querrey, who beat fellow American and two-time NCAA singles champion Steve Johnson in straight sets.

Robredo, the No. 3 seed, was upset by Nicolas Mahut 6-1, 7-6 (7-0). Mahut will play 14th-seeded Andreas Seppi, who held off Federico Delbonis in three sets.

Fourth seed Leonardo Mayer was also ousted, losing to Belgian qualifier David Goffin in two sets. Goffin has won his last 24 matches, including an ATP title in Kitzbuehel and three straight Challenger Tour championships.

The upsets continued with sixth-seeded Joao Sousa losing to Jerzy Janowicz in a third-set tiebreaker. Janowicz advanced to face No. 12 seed Edouard Roger- Vasselin, who outlasted Aleksandr Nedovyesov, also in three sets.

American wild card Ryan Harrison retired from his match against No. 7 seed Lukas Rosol after winning the first set 6-3 and falling behind 2-1 in the second. Rosol will next face No. 10 Pablo Andujar, who beat Igor Sijsling in two sets.

No. 8 seed Marcel Granollers avoided an upset by leveling oft-injured Paul- Henri Mathieu in straight sets to set up a meeting with ninth-seeded Lu Yen- Hsun, who beat Blaz Rola in straight sets.

Donald Young, the 11th-seeded American, lost just four games in a straight-set win over Canadian Frank Dancevic; and No. 13 seed Mikhail Kukushkin overcame Robin Haase in three sets to set up a meeting with Isner.

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