johncauthen
Semi-Pro
Coretex is weight at the top of the grip. Before Coretex, Nadal already used a basically stock racquet with weight added at the top of the grip, inside the core of the frame. Babolat came out with Coretex, coming out with racquets closer to what pros really use, which is probably why they called the first Coretex racquet, the Roddick Pure Drive.