The Philadelphia Freedoms were a charter franchise of World Team Tennis (WTT) founded by Dick and Ken Butera.

The Freedoms won the Eastern Division Championship and reached the WTT Finals where they lost to the Denver Racquets.

[5] John was such a big fan of the Freedoms that he attended home matches wearing the team's uniform and sat on the bench with the players.

[8] After working under King's tutelage for three weeks during the summer of 1974, Nagelsen lost to her in straight sets in the third round of the 1974 US Open.

[12] The victory over the Nets advanced the Freedoms to the Eastern Division Championship Series against the Pittsburgh Triangles.

By an aggregate score of 52–45, the Freedoms won the Eastern Division Championship and advanced to the WTT Finals.

The Freedoms had previously rejected an offer from the Houston E-Z Riders who sought to acquire Nagelsen in a trade.

With some encouragement from his fellow owners, Dick Butera traded King to the New York Sets in a complicated deal, on February 5, 1975.

"[5][16] After King was traded, a group of investors that included Bob Mades, Paul Slater, Herbert S. Hoffman, Robert K. Kraft and Harold Bayne expressed interest in buying the original Boston Lobsters.