The first major innovation in the tennis industry in recent years, the O3 racquet helps players improve their game. By transforming the ordinary pin-sized string holes into large O-ports, the sweet spot expands by up to 54 percent, helping players to hit consistent shots more often from more places on the racquet more often. The aerodynamic, futuristic O-ports also enable a faster, more explosive swing speed without having to enlarge the racquet head, increase its length or add weight.