I remember when Nadal hit the ball to Serena during the 'Hit for Haiti' fun exho 2 years ago prior to the AO. Serena literally was shocked and said "OMG....so much spin!!!!!" as she struggled to return Nadal's massive topspin forehand.
And Nadal was only playing around!
Serena and her sister tried to compete with a man once and got buried. Braasch was drinking and smoking at the same time too. LOL!