The underdogs brought their A-games at the Family Circle Cup on Thursday, as the entire round of 16 took the courts. No.1 seed Caroline Wozniacki survived; No.2 seed Samantha Stosur did not.
Wozniacki was the first to take Stadium court, and she had to battle for over two and a half hours to beat No.15 seed Barbora Zahlavova Strycova, 7-6(6) 7-6(9).
Wozniacki let an early 4-1 lead slip and saved a set point before taking the first set in a tie-break; she fought back from 0-2 in the second set and missed five match points in the breaker, eventually saving a set point against her before closing Zahlavova Strycova out with an overhead on her sixth match point.
Next up for Wozniacki will be No.6 seed Yanina Wickmayer, who beat qualifier Anna Tatishvili, 6-4 7-5.
Stosur, the defending champion, wasn't so fortunate, falling to Elena Vesnina later on, 6-4 6-1. Stosur, who stormed to her biggest WTA title at this tournament a year ago, led 4-2 before losing 10 of the last 11 games of the match.
"A lot of things went wrong for me, unfortunately," Stosur said. "Elena played quite well. She served well and hit the ball well, and I wasn't able to really do anything to negate her hitting the ball low and flat and kind of rushing me during the points. I started well, then lost serve and the wheels kind of fell off."
The crowd tried to help rally Stosur in the second set, but to no avail. "I felt their support in the match. I would love to have played better and gotten myself back into it and be here another day, but unfortunately I'll have to wait for next year."