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Sinner has won more titles than he has lost matches throughout a season of remarkable consistency.
He has claimed eight trophies, with triumphs in Rotterdam, Miami, Halle, Cincinnati, Shanghai and Turin as well as his Slam double.
His eight titles and 70 wins makes it the most successful season on the ATP Tour since Andy Murray in 2016.
He won a further three singles matches at the Davis Cup, meaning he has lost just six times to only four opponents this year.
Wimbledon and French Open champion Carlos Alcaraz beat him on three occasions, while there were also losses to Daniil Medvedev and Andrey Rublev.
The lowest-ranked opponent Sinner lost to was Stefanos Tsitsipas – at 12th in the world – in Monte Carlo.