From the ITF Rules of Tennis.
a. The hitting surface, defined as the main area of the stringing pattern bordered by the points of entry of the strings into the frame or points of contact of the strings with the frame, whichever is the smaller, shall be flat and consist of a pattern of crossed strings connected to a frame and alternately interlaced or bonded where they cross. The stringing pattern must be generally uniform and, in particular, not less dense in the centre than in any other area.
The racket shall be designed and strung such that the playing characteristics are identical on both faces."
Austrian PT280s, for almost 20 years.
Have yet to find something new with this buttery feel and precision.
Last edited by JT_2eighty : 04-18-2013 at 09:16 PM.