Johns Creek, Georgia (SportsNetwork.com) - Fourth-seeded Canadian Vasek Pospisil and unseeded American Jack Sock secured berths in the quarterfinals at the Atlanta Open tennis event.
Pospisil eased past Ukrainian qualifier Illya Marchenko 7-5, 6-3, while Sock dismissed qualifier Michael Venus of New Zealand 6-4, 6-2 in 67 minutes in second-round action.
The first round concluded when seventh-seeded Taiwanese Yen-Hsun Lu tackled American lucky loser Alex Kuznetsov 6-4, 6-4 at this hardcourt tournament.
The top seed this week is 6-foot-10 American, reigning champion and two- time runner-up John Isner, who beat 6-foot-8 South African Kevin Anderson in last year's all-tall Atlanta finale. Isner will open up against wild card compatriot and Georgia resident Robby Ginepri, while Anderson will take on Dutch lucky loser Thiemo de Bakker on Thursday.
The 2014 Atlanta champ will claim $103,000.
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