Sunday 21 January
Rod Laver Arena
R4
Suarez Navarro C
d.
Kontaveit A [32]
4/6, 6/4, 8/6
R4
Wozniacki C [2]
d.
Rybarikova M [19]
6/3, 6/0
R4
Nadal R [1]
d.
Schwartzman D [24]
6/3, 6/74, 6/3, 6/3
R4
Dimitrov G [3]
d.
Kyrgios N [17]
7/63, 7/64, 4/6, 7/64
R4
Svitolina E [4]
d.
Satralova D [Q]
6/3, 6/0
Margaret Court Arena
R4
Cilic M [6]
d.
Carreno Busta P [10]
6/72, 6/3, 7/67, 7/63
R4
Mertens E
d.
Martic P
7/65, 7/5
John Cain Arena
R4
Edmund K
d.
Seppi A
6/74, 7/5, 6/2, 6/3
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