British number one Cameron Norrie produced his finest display in recent months to beat 11th seed Casper Ruud and reach the Australian Open fourth round for the first time.
Norrie, seeded 19th, played aggressively and smartly in a 6-4 6-7 (7-9) 6-4 6-3 win in Melbourne.
The 28-year-old will face German sixth seed Alexander Zverev or American teenager Alex Michelsen on Monday.
"Honestly it is so special," Norrie said about reaching the last 16.
Norrie is the only Briton remaining in either singles draw.
Beating three-time Grand Slam finalist Ruud means Norrie is the first British player to reach the fourth round at Melbourne Park since Kyle Edmund in 2018.