Justine already served at a 115 mph,more than once even
But it could be that these ones aren't maybe 100% acurate.
Well, these stats look "suspicious" to me anyway. Why is it that suddenly all the players serve a few mph faster than at the Olympics, which was exactly the same surface (or even faster, when you heard the complaints of players during the Athens tournament)?
The same thing happens every year at the USO though, so I'm not that surprised...
My guess is that they place the radar at a different place, or maybe they also calibrate it a little bit more optimistically too, so they can maximize the speed and hope for the likes of Roddick to break another serve speed record!