- Two-time champion John Isner made it safely into the quarter-finals of the ATP hardcourt tournament at Winston-Salem on Wednesday, where compatriot Sam Querrey toppled second-seeded Kevin Anderson in straight sets.
Querrey, seeking a third straight semi-final appearance in the US Open warm-up, downed Anderson 7-6 (7/4), 6-4.
"I played great out there. That was the best I've played all summer,” said the 56th-ranked Querrey.
"I was aggressive the whole time and returned well. I thought everything went pretty well."
Querrey next faces Spanish fifth seed Guillermo Garcia-Lopez, who saved two match points in a 6-7 (4/7), 6-3, 7-6 (8/6) win over American Donald Young.
Isner, the top seed, defeated 13th seed Mikhail Kukushkin of Kazakhstan 6-1, 7-6 (7/3) and will face seventh-seeded Czech Lukas Rosol in the quarter-finals on Thursday.