During her 6-7, 6-2, 6-0 upset of Dominika Cibulkova at the Bank of the West Classic in Stanford, Sorana Cirstea wins six of her nine challenges in the first set.

"Toward the end of the set I was challenging everything because I didn’t trust anyone anymore,” said Cirstea. "I thought someone was playing a joke on me to see how I would react. It was like Candid Camera because there were too many mistakes. I started to laugh because it was just hilarious. The chair umpire never ruled and today if we didn’t have a challenge system I would be packing my bags for San Diego."

Cirstea added that she was zero for five on challenges the day before, in her second-round victory.