The Phoenix Racquets were a charter franchise of World Team Tennis (WTT). The team was founded as the Denver Racquets and won the 1974 WTT championship in the league's inaugural season, before moving to Phoenix in 1975. Following the 1978 season, eight of the 10 WTT franchises folded leaving only the Racquets and the San Francisco Golden Gaters prepared to participate in the 1979 season. WTT suspended operations of the league in March 1979, ending the Racquets existence.