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Jannik Sinner opts against John McEnroe as coach but will Boris Becker or Magnus Norman replace Riccardo Piatti? - Eurosport
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Jannik Sinner: Ski champ to tennis star - Roland-Garros - The 2021 Roland-Garros Tournament official site
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Jannik Sinner reportedly to be coached by Boris Becker - Tennis Tonic - News, Predictions, H2H, Live Scores, stats
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Jannik Sinner opts against John McEnroe as coach but will Boris Becker or Magnus Norman replace Riccardo Piatti? - Eurosport
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Who is Jannik Sinner? Tennis' top teenager breaks through in Miami to show signs of the next 'Next Gen'
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