Opposto a Fernando Verdasco (ATP 33), Novak Djokovic (1) ha ancora una volta vinto senza penare, sconfiggendo l'iberico per 7-6 6-3 6-4. Il favorito numero 1 al titolo australiano dovrà ora vedersela agli ottavi con il lussemburghese Gilles Muller (42), il quale ha fermato la corsa di John Isner (21). Lo statunitense è stato superato per 7-6 (7/4) 7-6 (8/6) 6-4. Ha dal canto suo impiegato quattro set Kei Nishikori (5) per piegare la resistenza di Steve Johnson (38), il quale aveva fatto suo il primo set. Dopo il 6-7 (7/9) iniziale, il giapponese si è ripreso imponendosi per 6-1 6-2 6-3, infrangendo i sogni di gloria del tennista a stelle e strisce.
In campo femminile ha sudato più di quanto ci si potesse immaginare Serena Williams (WTA 1), la quale si è imposta per 4-6 6-2 6-0 contro Elina Svitolina (26), capace di rendere equilibrata la contesa soltanto nella prima frazione. Accede agli ottavi anche Agnieszka Radwanska (6), la quale ha impartito l'ennesima lezione di tennis, dove troverà l'altra sorella Williams (18), Venus. La sorpresa di giornata è stata la prematura uscita di scena della numero 4 al mondo, Petra Kvitova. A far festa è stata l'americana Madison Keys (35), impostasi per 6-4 7-5.
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