Mats Wilander had a warning for anyone hoping to beat Rafael Nadal at the 2021 Australian Open after the Spaniard beat Britain's Cameron Norrie in straight sets.
The world number two was too strong for Norrie, as he won 7-5 6-2 7-5 to reach the last 16 in emphatic fashion.
Norrie, who downed the top-ranked Brit, Dan Evans, earlier in the tournament, put up a doughty resistance on Rod Laver Arena but ultimately came up short.
Nadal, who has not triumphed at Melbourne Park since his single crown back in 2009, has notably compensated for a nagging back injury with a super-aggressive approach this year and it continues to pay off.
Eurosport's Mats Wilander said of Norrie's performance: "He did very well. It was a good match from Norrie and maybe a step in the right direction.
"But I think he was playing way too much to Nadal's backhand and you can't do that. You go into this match thinking, 'If I'm going to beat Rafa, I need to look at what Novak Djokovic does', for example.
Norrie went to Nadal's backhand 60 per cent of the time. When Novak Djokovic plays Rafa, it is literally 50:50 [hitting to the backhand and forehand], and Novak has the best record against Rafa.
'You can't do that against Nadal' - Wilander's warning for rivals
"Going straight to the backhand is a nightmare scenario. Nadal, I love it when he's that aggressive with his court positioning in the returns.
"He [Norrie] played a good match, and obviously it's much easier to say from the outside than when you're out there and you realise how good Nadal is."
With Norrie out of the tournament, Britain no longer has a representative in either singles draw, but he could not have battled more tirelessly against the second seed.
'Wow, your son is doing rather well!' - Norrie breaks Nadal
Eurosport expert and former British star Jo Durie said: "This will have been such a valuable experience for Norrie on the big stage, and it will have given him a lot of confidence."
The Spaniard did not look overly troubled by his back injury during the match, and will have been relieved to have secured his swift progress with a straight-sets win.
Nadal will next take on Fabio Fognini in the fourth round in Melbourne after the fiery Italian beat home favourite Alex De Minaur on Margaret Court Arena.
Nadal: The feeling is 'completely different' without fans
"We have played a lot of times; he has beaten me a few times," Nadal said of Fognini. "I need to keep improving and you don't expect any easy games."
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