Testimonial for iTPA by John Isner, world top 10 tennis pro & Davis Cup hero, who is also a founding member of the ITPA Certification Commission

“The game of tennis is based on physicality — getting faster, stronger, quicker — and preventing injuries is why I spend so much time training. The International Tennis Performance Association has the most research based information, and its leadership includes renowned experts which makes it the leading provider of tennis-specific training information anywhere in the world.”

- by John Isner, world top 10 tennis pro & Davis Cup hero, who is also a founding member of the ITPA Certification Commission