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Cristiano Ronaldo has hailed Rafael Nadal as an "incredible" inspiration to millions around the world after the King of Clay announced he will retire from tennis next month.

Having struggled with injuries throughout the last couple of years, 22-time grand slam champion Nadal confirmed 2024 will be his final year on the ATP Tour on Thursday.

Nadal will call time on his glittering career after November's Davis Cup finals in Malaga, where he will feature for a Spain team also containing four-time major champion Carlos Alcaraz.

Only Margaret Court, Novak Djokovic (24 each) and Serena Williams (23) have won more grand slam singles titles than Nadal in tennis history (22), with his 14 triumphs at the French Open a record for titles won at a single major.

He posted a video explaining his decision to bow out to his social media channels on Thursday, saying he had been playing with "limitations" for the last two years.

Five-time Ballon d'Or winner Ronaldo was among the first to react to the news, commenting on Nadal's Instagram post: "Rafa, what an incredible race you've had! 

"Your dedication, passion and incredible talent have inspired millions around the world.

"It has been an honour to witness your journey and to be able to call you a friend. Congrats on an amazing career! Enjoy your retirement!"