The racquet in question is about 10 years old (Dunlop 300g hotmelt) and has been restrung A LOT. I played sectional and national tournaments as a junior so this racquet was getting restrung more than twice a month for 4 years and about once every 2 months for 6 years. I am a power player and hit the ball hard (serves in the 120's). So my question is: could this be a fatigue crack? Or should I confront the shop that did the stringing? BTW I don't abuse my racquets, they look bran new.