But the 17th seed will instead spare his energy for Sunday night's fourth-round showdown with world No.3 Grigor Dimitrov as he continues his bid to break Australia's 42-year men's title drought at the Open.
Finally, Britain's Kyle Edmund continued his good showing in Melbourne, reaching the third round of the Australian Open for the first time following a five set 7-6 (0), 3-6, 4-6, 6-0, 7-5 marathon win over Nikoloz Basilashvili of Georgia.
On the 1/8-finals Dimitrov is expecting the victor of the match between No. 15 Jo-Wilfried Tsonga (Fr) and No. 17 Nick Kyrgios (Avl), which should start shortly after 10 am.
With just one former grand slam champion remaining in the women's draw, second seed Caroline Wozniacki and fourth seed Elina Svitolina will feel the same if they can not get past Magdalena Rybarikova and Denisa Allertova respectively.
France's Alize Cornet became the latest player to fall foul of the extreme heat in Melbourne, saying she suffered dizzy spells in her loss to Elise Mertens.
"These are the most important matches for me, when certain things are not working for me and I find a way", said Dimitrov.
Fourth seed Elina Svitolina ended the first Grand Slam odyssey of 15-year-old Marta Kostyuk in straights sets on Friday.
At just 15, Kostyuk was the youngest Melbourne Park third-round contestant since Martina Hingis in 1996, and was hailed after her previous win as "the future of tennis".
And the Bulgarian delivered in a testing 6-3, 4-6, 6-4, 6-4 win over Russian rising star Andrey Rublev as temperatures touched 40 Celsius. Yeah, I just played out there today.
French Open champion Jelena Ostapenko's tournament is over, with the Latvian seventh seed crashing out in three sets to Estonian Annet Kontaveit.
"Physically, I feel really good". "These are professional athletes, we are at the end of the day an outdoor event".
It sets her up with a clash against 19th-seeded Slovak Magdalena Rybarikova.
"It is a mistake to play".
For all the days when he looked like a world beater, there were still defeats by the likes of Mikhail Kukushkin, Viktor Troicki and Steve Johnson - fine players but the kind of opposition Dimitrov expects to knock over.
The number three seed and Russian Andrey Rublev were locked in a fierce battle that saw long points, games and sets despite the incredibly hard conditions.
But on Friday she gave her most assured performance of the tournament so far, cruising past Kiki Bertens of the Netherlands 6-4, 6-3 in an hour and 26 minutes.
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