Belgium's Wickmayer looked crestfallen afterwards and said was feeling "definitely not good" after letting slip so many opportunities. "It's not fun," she said, adding: "I think she served very well on certain points and other points I didn't go for enough. "But I think it's normal when you have match point and you want to play it a little bit safe. Then after, you realise it's not the best option. "She did well and I wasn't as aggressive as I should have been on the big points."

Safarova, a quarter-finalist in 2007, may need more good fortune in her next match, when she plays six-time champion Serena Williams.