Il finalista dello scorso anno, Rafael Nadal, ha superato in tre soli set anche il secondo turno degli Australian Open. Il numero uno mondiale ha avuto la meglio sull'argentino Leonardo Mayer (ATP 52) con il risultato di 6-3 6-4 7-6 (7/4). Nei sedicesimi il 31enne spagnolo sarà opposto al bosniaco Damir Dzumhur (28).
Ha invece tremato Grigor Dimitrov (3) contro lo statunitense Mackenzie McDonald (186) proveniente dalle qualificazioni. Il bulgaro si è imposto al quinto set dopo quasi tre ore e mezza, coi parziali di 4-6 6-2 6-4 0-6 8-6.
Ha sofferto pure Jo-Wilfried Tsonga (15), che ha battuto in rimonta il canadese Denis Shapovalov (50) dopo una battaglia giunta al quinto durata 3h37'. Il prossimo avversario del francese sarà l'australiano Nick Kyrgios (17), che ha eliminato in tre set il serbo Viktor Troicki (65).
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