Related Clues:

• Backed youth with an expert in court
• Rafael of tennis
• Four-time U.S. Open champ
• Longtime Agassi rival
• Decorated athlete whose name could be parsed as 'zero' + 'loss'
• Rafael --, Spanish tennis player
• Tennis's Rafael
• 14-time winner of the French Open
• Upstanding young boy, an exceptional service provider
• First man to complete tennis's Surface Slam
• Federer rival
• Rafael who is one of tennis's "Big Three"