Kim Clijsters was last mum to win a Grand Slam at Australian Open in 2011, now with more mothers on tour and winning WTA ...

Simona Halep sprinted past Victoria Azarenka 6-3, 4-6, 6-4 on Wednesday to reach the semifinals of the US Open, where she will meet Flavia Pennetta.

Azarenka recovered to help stem the tide but the Belarusian could not prevent Halep from taking a set lead, which was secured thanks two booming serves from the Romanian at 30-30 in the ninth game.

I don't know where I found the power to win this match." Halep, diminutive at 5-foot-6 compared with the 6-foot Azarenka, played her second straight match with a heavy wrap on her left thigh.