OP, you should feel complemented by being called a "pusher" by the SORE LOSER. I'm watching a little of the Wimby final replay, between Serena and Radwanska, Johnny Mac just said Serena was being "tentative...PUSHING the ball". In the previous sentence JC commented that Radwanska "...can't afford to just push the ball back, she has to use that ability she has to create some angle."
It's only the second game of the first set--they're playing rally ball, they're a little nervous--important people are watching, "Sir" Charles Barkley's in the Williams' box. I think people are getting "pusher" confused with "hacker".
"...the human emotional system was not designed to endure the mental rigors of a tennis match." Dr. Allen Fox