These two cities were home (at the time) to the teams that won the first two World Team Tennis championships. The Racquets (Françoise Dürr and others) beat the Philadelphia Freedoms in the first WTT final, then relocated to Phoenix. The Triangles (Vitas Gerulaitis and others) beat the San Francisco Golden Gaters in the 1975 final but folded a year later.
Denver, Pittsburgh