From Martina Navratilova to Venus Williams, some of tennis' greatest legends have extended their careers into their 40s.

Hey Steve, Sept. 10th, 2001, the day after the end of a US Open in which the singles titles were taken by Lleyton Hewitt and Venus Williams, was an eventful one for me.

Seven-time Grand Slam champion Venus Williams will be the oldest singles entrant at the US Open since Renee Richards when ...