Not that its important, but ITF "Rules for Equipment", Appendix II (c.) states: "The frame, including the handle, and the strings, shall be free of any device which makes it possible to change materially the shape of the racket, or to change the weight distribution in the direction of the longitudinal axis of the racket which would alter the swing moment of inertia, or to change deliberately any physical property which may affect the performance of the racket during the playing of a point. No energy source that in any way changes or affects the playing characteristics of a racket may be built into or attached to a racket." From this, it would seem the magnets in the Fischer frames (an energy source (?) intended to "affect the performance of the racket during the playing of a point"), regardless of whether or not they work, violate both the spirit and the letter of the rule. Would anyone care to comment? I'm curious as to your thoughts.