Since 1968 when the Open Era began, no male or female player won more singles tournaments than Navratilova (167), doubles events (177), or matches (2,189). She felt the ping of defeat a meager 219 times (singles) in a career that began in 1975. She was still active in 2006 when she won the mixed doubles championship at the US Open a month away from her 50th birthday, becoming the oldest player in history to win a major title. Opponents who faced Navratilova in singles play stood a scant 13 percent chance of winning; the left-handed athlete par excellence won 87 percent of her matches. In doubles competition Navratilova was 747-143, an 84 percent winning clip. Still, all good things must come to an end. Martina Navratilova reflects on the exact moment it was time for her to hang up the racket and call it quits - for good this time.