Top seed John Isner had to battle past Robby Ginepri 4-6, 7-6 (5), 7-5 to make it through to the last eight of the ATP 250 BB&T Atlanta Open. Isner hit 30 aces to serve his way out of trouble as he was just a tiebreaker away from being upset by the world No.281.
Eight seed Marinko Matosevic broke American Tim Smyczek 6-4, 7-5 to set up a last eight clash with Isner.
Second seeded Kevin Anderson, another big server, was not able to dig himself out of trouble in his match against Thiemo de Bakker. The 142nd ranked Dutch man beat the South African 6-4, 7-5.
Another seeded casualty was Yen-HSun Lu (7) who was beaten 6-4, 6-3 by Benjamin Becker.