Rafael Nadal outclassed Fabio Fognini to close in on the all-time Grand Slam titles record on Monday.
Nadal said his lower-back stiffness was continuing to improve after his 6-3, 6-4, 6-2 against the flamboyant Italian, which set up a quarterfinal against Greece’s Stefanos Tsitsipas.
Fognini had registered a five-set win over Nadal at the 2015 US Open, but the Spaniard cantered to victory after recovering from 2-4 down in the second set.
Nadal is now into his 43rd Grand Slam quarterfinal, staying on course for a title match with eight-time winner Novak Djokovic who battled through an abdominal injury to reach the last eight on Sunday.
“I’m happy to be in the quarterfinals today — that means a lot to me, it’s positive stuff,” said Nadal, who is level with Roger Federer on 20 Grand Slam men’s singles titles.
Next up for Nadal is world number six Tsitsipas, who went through on a walkover after Italy’s Matteo Berrettini pulled out with an abdominal strain.
The Melbourne tournament remained fan-free for a third day on Monday during a five-day lockdown in Victoria state to curb a coronavirus outbreak.
Earlier, unseeded American Jessica Pegula reached her maiden Grand Slam quarterfinal with victory over Elina Svitolina, her first over a top-10 player.
Pegula, whose billionaire father owns the Buffalo Bills NFL team, overcame fifth seed Svitolina 6-4, 3-6, 6-3 to set up a meeting with fellow American Jennifer Brady, a 6-1, 7-5 winner against Croatia’s Donna Vekic.
“I can’t get more confident — it is my best result yet and I’m playing good tennis and today was a hard-fought win,” said Pegula, 26.
“Jen (Brady) is an awesome person. She’s a great person,” Pegula added. “She was texting me, ‘I’m so happy, I’m so proud. This is awesome.’”
Elsewhere, fourth seed Daniil Medvedev and seventh seed Andrey Rublev both won to ensure an all-Russian quarterfinal.
Medvedev, the 2019 US Open runner-up, blew away American world number 192 Mackenzie McDonald 6-4, 6-2, 6-3 to extend his winning streak to 18 matches.
Rublev, who is also unbeaten this year, went through when Norway’s Casper Ruud retired after losing the first two sets.
The 22-year-old Norwegian had reached the last 16 at a Slam for the first time — emulating his father, Christian, who achieved the same feat at the 1997 Australian Open.
With qualifier Aslan Karatsev already through to face Grigor Dimitrov in the top half of the draw, it means there will be three Russian men in the last eight of a Slam for the first time since the Open era began in 1968.