Women's tennis has yet another comeback tale after the announcement by Martina Hingis that she plans to return to the tour next year. She was only 22 when foot injuries and slumping results caused her to retire early in 2003. It was a surprising, depressing end to a career that peaked very early, with Hingis becoming both the youngest No. 1 player in history and winning all five of her Grand Slam singles titles before her 19th birthday. Now, at age 25, the Swiss woman has decided that she is fit and well-adjusted enough to plunge back into the brightly...