Second-seeded South African Kevin Anderson locked up his sixth ATP quarter-final berth of the season Wednesday with a straight-sets win over Jerzy Janowicz at Winston-Salem.
With the start of the US Open less than a week away, Anderson kept his campaign going at this hardcourt tune-up with a 7-6 (7/2), 6-4 victory over Poland`s Janowicz, runner-up last year to Czech Lukas Rosol.
"I was really pleased with today`s performance," said Anderson, who fired 17 aces and saved all three break points he faced. "It was an improvement from yesterday. I served well today, which was the big goal. I took care of my own service games. When you`re playing a big server like Jerzy that`s one of the most important aspects."
Anderson next faces 18-year-old Croatian Borna Coric, who needed only 57 minutes to rout Argentinian Diego Schwartzman 6-2, 6-1.
Coric, who toppled Andy Murray in his most recent hard-court quarter-final in Dubai, will be seeking the fifth victory of his career against a top-20 player when he takes on Anderson.
In the other quarter-final in the bottom half of the draw, sixth seed Thomaz Bellucci of Brazil meets Malek Jaziri.
Bellucci defeated Czech Jiri Vesely 6-1, 6-7 (7/9), 6-4, while Tunisia`s Jaziri downed Russian Teimuraz Gabashvili 7-5, 6-4.
The upsets continued in the top half of the draw as 13th-seeded American Steve Johnson dispatched third-seeded Frenchman Jo-Wilfried Tsonga 6-3, 4-6, 7-6 (7/4).
Johnson booked a meeting with Taiwan`s Lu Yen-Hsun, a 7-6 (7/1), 1-6, 7-5 winner over South Korea`s Chung Hyeon.
Pierre-Hugues Herbert kept the French flag flying, defeating Britain`s Aljaz Bedene 6-3, 6-0.
Bedene stunned top-seeded Frenchman Gilles Simon in the second round.
Herbert will take on Spain`s Pablo Carreno-Busta, who defeated Italian Simone Bolelli 6-4, 4-6, 6-1.