The debate over who is the greatest tennis player of all time is arguably the most passionate — and endless — discussion in the sport. Every fan has their favorite. Adding his voice to this timeless conversation, former World No. 1 Jim Courier offered his verdict in a 2025 analysis comparing Roger Federer, Rafael Nadal, and Novak Djokovic.

Without hesitation, the American sided with Djokovic. Rather than focusing on playing styles or personal preferences, Courier pointed directly to statistics as the only valid criterion to settle the debate. “For me, the numbers don’t lie. He’s the best and deserves every bit of praise he gets,” said the four-time Grand Slam winner in a conversation with Tennis Channel.

To support his conclusion, Courier broke down the numbers that, in his view, tip the

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