There has been a push recently from the USRSA to get stringers to educate customers to move away from full string beds of Polyester strings. Why you ask? A full bed of polyester strings can increase the amount of impact and shock to elbow joints. I have tried this...
Strings may be the soul of racquet, but to many players they are just an afterthought. Players will spend 6 months trying out racquets and 6 minutes choosing a string.