He joins 4th seed Daniil Medvedev in the last eight.
Rafa Nadal has booked his place in the quarter finals of the Australian Open.
The Spaniard, who's aiming for a record 21st Grand Slam title, beat Italy's Fabio Fognini 6-3 6-4 6-2 in their fourth round match.
Fourth seed Daniil Medvedev is also into the last eight in Melbourne after a straight sets win over Mackenzie McDonald.
When you reach your 4️⃣3️⃣rd Grand Slam quarterfinal 🙌@RafaelNadal | #AO2021 | #AusOpen pic.twitter.com/59xQYuFCfl
— #AusOpen (@AustralianOpen) February 15, 2021
Women's top seed Ashleigh Barty's in fourth round action later against American Shelby Rogers.
Fifth seed Elina Svitolina was beaten in three sets by Jessica Pegula.
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