FACTBOX: High-profile players who retired early
Ash Barty at 25, here is a list of high-profile tennis players and other sportspeople who called time on their careers at a young age. KIM CLIJSTERS (TENNIS)U.S. Open champion in 2005, Clijsters retired in 2007 at the age of 23 but returned after a two-year hiatus to claim another three Grand Slam titles.


