Billie Jean King on Instagram: “47 years ago, my friend Elton John played in front of 55,000 fans at Dodger Stadium. I had a terrific time singing back-up vocals and…”
Elton John - Happy Birthday to Billie Jean King, the tennis champ who inspired Elton's hit song, 'Philadelphia Freedom'. 🎂🎉 | Facebook
![Elton John and Billie Jean King 15th annual 'Advanta World TeamTennis Smash Hits' at the Villanova University Villanova Stock Photo - Alamy Elton John and Billie Jean King 15th annual 'Advanta World TeamTennis Smash Hits' at the Villanova University Villanova Stock Photo - Alamy](https://c8.alamy.com/comp/C070CT/elton-john-and-billie-jean-king-15th-annual-advanta-world-teamtennis-C070CT.jpg)