O3 White tennis racket

By re-engineering ordinary pin-sized string holes into revolutionary giant o-ports – which liberate the strings – Prince has created a radical new racquet that expands the traditional sweet spot by up to 54 per cent. O3 engineering is the only racquet technology that combines a larger sweet spot with a faster, more explosive swing speed without enlarging the racquet head, increasing its length or adding weight. The first truly pioneering – and highly visible – initiative in the sport since the move from wood to graphite racquets, O3 technology has provided a major stimulus to racquet sales worldwide. Since switching to the O3 White, Maria Sharapova capped a sensational 2006 by winning her second Grand Slam title at the US Open.