Prince Tennis Racquets. A leading manufacturer of performance tennis racquets. The idea behind Prince’s EXO3 is the patented Energy Bridge, an exoskeletal structure that suspends the string bed from the frame, increasing virtual head size up to 83 percent for a larger sweet spot. In addition, prince tennis racquets frame vibration is reduced by up to 50 percent. Shop the full selection of Prince tennis racquets including O3 rackets, EXO3, O3 Hybrid racquets and Triple Threat Racquets.