Carlos Alcaraz survived a first-set wobble before racing into the Wimbledon third round.
The defending champion from Spain was broken twice by Australian world number 69 Aleksandar Vukic after serving for the opening set.
Vukic, 28, had form for upsetting the Spaniard, having beaten the then 17-year-old in French Open qualifying four years ago.
But there was to be no repeat as Alcaraz managed to break back to force a tie-break, which he dominated, and never looked back.
The 21-year-old went on to register a 7-6 (5) 6-2 6-2 victory, spending just an hour and 48 minutes on Court One.
"I'm really happy about my performance today," he said. "The first set was the key for me. He served for the set and then I played a really good tie-break. In the second and third I played a really high level so I'm really happy about it."
Alcaraz will face American Frances Tiafoe in the third round on Friday.
World number one Jannik Sinner survived an all-Italian Centre Court dogfight against Matteo Berrettini to book his place in the third round.
Sinner edged the opening two sets on tiebreaks under the closed roof but was rocked on his heels by a Berrettini fightback before prevailing 7-6(3) 7-6(4) 2-6 7-6(4).
Berrettini, who was runner-up to Novak Djokovic in 2021 but was plagued by injuries last year and is now ranked down at 59th, looked capable of dragging the match into a decider with some heavy-metal tennis.
Top seed Sinner was wobbling when some scrappy groundstroke errors meant he went a break down early in the fourth set, but he managed to wrestle back control in the nick of time.
Berrettini saved a match point when serving at 5-6 in the fourth set and belted away a forehand to set up the third tiebreak of an absorbing tussle.
The law of averages suggested the big-serving Berrettini would come out on top this time but once again Sinner was as cool as a cucumber when it mattered to get the job done shortly before Wimbledon's 11pm curfew.
"It was very tough to face Matteo in the second round in such an important tournament," Sinner, who embraced his friend and compatriot warmly at the net, said on court.
"Today was a high level match and we both played well and in the three tiebreaks I got a bit lucky. I knew I had to raise my game a level today, he is a grasscourt specialist.
"There were some ups and downs which is normal but I'm happy to be in the next round."
The 22-year-old Sinner, who extended his record against fellow Italians to 14-0, will continue his quest to add the Wimbledon title to this year's Australian Open against Serbia's Miomir Kecmanovic on Friday.
Swaggering Italian Fabio Fognini rolled back the years with a dazzling display to knock out eighth seed Casper Ruud 6-4 7-5 6-7(1) 6-3.
The 37-year-old former top-10 player, these day sporting peroxide blond hair, produced his trademark brand of languid shot-making to largely dominate Ruud on Court Two.
An early break of serve after a short rain delay was enough for him to take the first set.
Fognini was knocked out of his smooth stride when he suffered a heavy fall on the lush turf but dusted himself down to take the second set with a break of serve in the 12th game.
He appeared to be on the brink of victory against a flat-looking Ruud when he led 5-2 30-0 in the third set with a double break but twice failed when serving for the match.
Ruud dominated the tiebreak to extend the match but Fognini continued to call the shots in the fourth set and broke serve for a 5-3 lead. Three match points went begging as Fognini appeared to tighten up but at the fourth time of asking he belted away a forehand winner to seal the win.
Defeat left 25-year-old claycourt specialist Ruud still figuring out how to play his best on grass while Fognini is into the third round at Wimbledon for the seventh time in his 14th visit, although he has never gone further than that.
Fifth seed Daniil Medvedev battled his way to a 6-7(3) 7-6(4) 6-4 7-5 victory over 102-ranked Alexandre Muller.
The Russian looked out of sorts early on Centre Court as he lost the first set on a tiebreak to the 27-year-old Frenchman in their first ever Tour-level meeting and had to save a set point to avoid going down 2-0.
However, Medvedev, runner-up at the Australian Open, found a bit more of his usual groove to level the match with a tiebreak before outlasting a strong Muller to clinch the third set and then the match over three and a half hours.
