A tennis racket in accordance with claim 11 wherein said surface is strung with a non-uniform spacing .
The openings between adjacent strings at the central portion of said surface are smaller than corresponding openings close to the frame .
A tennis racket in accordance with claim 11 wherein said surface is strung with a non-uniform spacing so that the openings between adjacent strings at the central portion of said surface are smaller than corresponding openings close to the frame .