Punchy stuff from the eight-time Wimbledon champion, leaping all over a slower serve and firing it down the line for 0-30, before undercooking a slice from the baseline and then hooking a forehand wide. Hubert Hurkacz digs out a snappy ace and then holds.

LillianBarton: Can Federer pull it back?

Briton Naomi Broady and French partner Jeremy Chardy have won the first set of their mixed doubles third-round tie with South African Raven Klaasen and Croatia's Darija Jurak.

A break in the eighth game proved decisive for Broady and Chardy before they held serve to clinch the set against the 10th seeds.

Sonia Oxley
BBC Sport at Wimbledon

Court One is really filling up now. Word must have got out that there is a quality match going on here.

Berrettini seems to have shaken off those nerves now that he has taken that first set and there's a real spring in his step at the change of ends after he holds his opening serve of the second set.

Right then... does the Roger Federer comeback start here?

Andrew Castle
BBC Sport tennis commentator on BBC One

Magnificent match-play from the man playing his first Grand Slam quarter-final, playing his last two points like that.

Forget your Masters 1000s, Davis Cups and everything else, when you are in the heat of battle, you have to produce your best, and he has done that.

Two big serves, two aces and the first two points of the second set in the blink of an eye from Berrettini.

The Italian shakes his head following a slack shot that gets Auger-Aliassime on the board, but the seventh seed gets the hold.

Another cannonball of a serve from Hubert Hurkacz and he takes the second set!

Big serve from Hubert Hurkacz. Set point. What a moment.

Federer bats a forehand into the guts of the net on the run and then fires a huge serve down the T. But Hurkacz can serve for the set...

Oh no! It's a lovely set up from Roger Federer and he appears to have a straightforward volley at the net, but the Swiss star slips and sends the ball sideways off his frame! He recovers with a wonderful return off the next serve.

Andrew Cotter
BBC Sport commentator

Finally Berrettini can breathe a sigh of relief... but that was harder work than it needed to be.

An ace from Roger Federer just when he needed it, but he fails to follow up... steaming a forehand volley into the tape.

After missing four set points on his own serve, it's three set points for Berrettini on Auger-Aliassime's game.

Can the Canadian escape again?

He saves one. Berrettini nets for the second. Surely not...

Auger-Aliassime eventually runs out of lives, netting to hand Berrettini the first set.

Federer thumps a backhand straight at his opponent to get on the board but can't win an enthralling exchange at the net as Hurkacz stands tall.

Big fist pump from the Polish hopeful, slinging a passing winner beyond Roger Federer.

Roger Federer saunters across the baseline staring at his racquet after a stray ball, another finds the net off his forehand side and Hubert Hurkacz sizzles down an ace to send this set to a tie-break.

Sonia Oxley
BBC Sport at Wimbledon

How on earth did Auger-Aliassime get to deuce in this game? A desperate retrieval is scooped high into the air and somehow Berrettini failed to kill off the point and instead allowed the Canadian back into the rally. The Italian then netted to allow his opponent to level.

Nerves?

Andrew Cotter
BBC Sport commentator

Great reaction by the Canadian. Suddenly this set is not beyond Auger-Aliassime... and that will play on the mind of Berrettini as well.

And Auger-Aliassime claims the break to stay alive in the first set!

Berrettini missed four set points in all there, the Italian just tightening up at the wrong moment.

He is still one break to the good, of course.