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Hugo Gaston of France walks from the court after retiring from his first round match against Jannik Sinner of Italy at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Jannik Sinner, left, of Italy consoles Hugo Gaston of France following Gaston's retirement from their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Jannik Sinner of Italy plays a forehand return to Hugo Gaston of France during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Jannik Sinner of Italy plays a forehand return to Hugo Gaston of France during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Hugo Gaston of France plays a forehand return to Jannik Sinner of Italy during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Jannik Sinner of Italy serves to Hugo Gaston of France during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Hugo Gaston of France plays a forehand return to Jannik Sinner of Italy during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Jannik Sinner of Italy plays a forehand return to Hugo Gaston of France during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
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Hugo Gaston of France plays a forehand return to Jannik Sinner of Italy during their first round match at the Australian Open tennis championship in Melbourne, Australia. | Photo: AP/Asanka Brendon Ratnayake
