When and how did Pironkova's serve become so improved?
I remember very well watching Pironkova upset Venus Williams in the first round of the 2006 AO. Back then she was not smacking first serves as big as she is in 2010. I enjoy her service motion: tosses, waits, then pounces, jumping into the court and achieving great wrist snap. Her timing is very good. But I never expected Pironkova to be smacking serves around 116 MPH at Wimbledon!
Anyone know anything about her coaching, training, and progress in her game over these last few years? It's rare to see a female player create a weapon out of the serve when it was previously just a mediocre shot.