Spanish top seed Rafael Nadal battled past rival Nick Kyrgios in a thrilling four-set match to reach the Australian Open quarter-finals.
Nadal, 33, had not dropped a set this tournament before 23rd seed Kyrgios provided his biggest test so far.
Kyrgios, who wore a Kobe Bryant basketball shirt in the warm-up, battled hard but Nadal came through 6-3 3-6 7-6 (8-6) 7-6 (7-4).
Nadal will face Austrian fifth seed Dominic Thiem in the last eight.
Nadal and Kyrgios have not always seen eye to eye with the rivalry blowing up last year after a tempestuous meeting in Acapulco.
Afterwards the 19-time Grand Slam champion accused Kyrgios of lacking respect before the Australian responded by calling him “super-salty”.
Yet the respect for each other’s ability on the court, despite their wildly contrasting styles, has rarely been in doubt and was typified by their firm handshake at the net following a riveting contest on Rod Laver Arena.
“When Nick is playing like he did today with this positive attitude he brings a lot of things to our sport,” said Nadal, who won his only Australian Open title in 2009.
“I encourage him to keep working like this because he is one of the biggest talents of our tour.”
Nadal came into the match having not dropped a set in the opening three rounds, sealing his place in the last 16 with his “best match so far” against fellow Spaniard Pablo Carreno Busta.
Kyrgios’ route was much more strenuous, having needed four-and-a-half hours to beat Russian 16th seed Karen Khachanov on Saturday night.
The effects of that gruelling match and, possibly, the death of his basketball hero Bryant seemed to contribute to a muted start from the soon-to-be Australian number one.
While Nadal was finding lines with blistering winners in the opening few games, Kyrgios’ returning game was much looser and lacked fizz.
A wide backhand allowed to Nadal to take his second break point for a 3-1 lead, proving pivotal as the Spaniard then breezed through the first set in 36 minutes.
As Kyrgios struggled to hold serve in the opening game of the second set it looked like Nadal could quickly run away with the match.
Kyrgios saved three break points – including one after playing a shot between his legs in a rally – before clinching a hold which proved pivotal.
In the next game he earned his first break point of the match, urging the home support to crank up the noise by punching his racquet in the air.
They responded and he responded too. A wonderful point – full of incisive forehands, punching backhands and teasing drop-shots – went Kyrgios’ way with a winner which kissed the baseline.
Kyrgios celebrated by, almost poignantly, leaping into the air with a slam dunk-style basketball jump and carried the momentum throughout the set to level.
“Seems like in the beginning I was in control but you know against Nick you are never in control,” Nadal said.
“If you make a mistake then it is difficult to break him.”