Sara Errani is seeking the seventh win for an Italian over a World No.1 and her first win in seven attempts against a World No.1.
WTA Staff

PARIS, France - Sara Errani recorded her first Top 10 win at last year's French Open, then her first Top 5 win on Tuesday at this year's French Open. So, the next big achievement for her would be her first win in seven tries over a World No.1 when she takes on Serena Williams in Thursday's semifinals.

Interestingly enough, if Errani is able to pull off the upset, it would be the seventh time an Italian upended a reigning World No.1. Here are the six instances in WTA Rankings history:

EventResult
'04 French Open 2rGarbin d. Henin 75 64
'06 Fed Cup QFSchiavone d. Mauresmo 46 76(4) 64
'08 Dubai QFSchiavone d. Henin 76(3) 76(4)
'08 Zürich 2rPennetta d. Jankovic 57 63 63
'11 Toronto 2rVinci d. Wozniacki 64 75
'11 Beijing QFPennetta d. Wozniacki 36 60 76(2)