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Bionic Poster
The day the gap between Murray and Stan is more than Murray and Novak is when Murray will be part of the Big 4.
Hmmm...maths has never been my strong point but I reckon 42 titles and 10,000 ranking points (Murray) is closer to 66 titles and 10,000 ranking points (Djokovic) than 15 titles and 5,000 ranking points (Stan).