Possible Clues:

• Tennis player, a good one, entertaining a fool
• Is old relation backing former court favourite?
• Andre --, tennis player
• Rafter rival
• Career Golden Slam winner
• Ashe Humanitarian Award recipient, 1995
• Andre --, 1999 French Open singles champion
• U.S. Open winner of 1994 and 1999
• Autobiographer who wrote that tennis is 'the loneliest sport'
• "Open: An Autobiography" subject