Possible Clues:

• Winner of nine French Opens
• Athlete known as "The King of Clay"
• Only male player with more French Open crowns than Borg
• Player nicknamed 'the King of Clay'
• Champion in court has, as he'd say, nothing left
• Nine-time French Open champion
• 2014 French Open winner Rafael
• Tennis' Rafael
• Tennis great with 11 Grand Slam singles titles
• Federer dueler