all, i am not sure if this has been discussed in a prev thread. i am just wondering if anyone has theories out there regarding how the head frame breaks (or tends to break) during play, esp in doubles when rackets collide. i am wondering if the tendency is for the racket head that strikes the other racket head (faster hitting the slower) will break more often, or if it's the case where the slower head frame, that got struck, will break more often. i have been the recipient of 4 broken rackets and so far, every time my racket has been the one coming out broken, and the other racket always unscathed. any theories? any physics majors out there? i'd like to hear your opinions.