David Ford has played tennis since he was 7 years old, and he's been a fan ever since. So, the arrival of an Association of Tennis Professionals (or ATP) tour event in his hometown was a dream-come-true. And, as David quickly found out, it was also an opportunity to learn more about the sport he loves. It turns out that the tour has changed a lot since the Open Era began back in 1968. It allowed amateurs and pros to enter tournaments and actually make a living off their earnings.