Alcaraz swipes his hand through the air after a limp drop shot at 15-30, as Sinner puts away the volley!

Two more match points for Sinner! Brilliant forehand down the line from Alcaraz, who watches the Sinner pick up go long - but that was not far away from the baseline!

The first serve from Alcaraz is incorrectly called out, putting pressure on the second. Sinner whips the return straight back before Alcaraz crushes the reply for a winner!

Deuce. Sinner slips, but then dispatches a huge forehand winner cross-court! Another match point.

Huge serve out wide from Alcaraz! Another saved - “vamos!” he yells.

Another incredible return from Sinner - so threatening. And then there’s another incorrect line call! Alcaraz is furious.

Woah. Hugely impressively hold to love from Sinner to move one game away from the quarter-finals. Massive serving from the 20-year-old, whose only appearance at Wimbledon resulted in a first-round exit last year.

A fairly simple hold for Alcaraz, who profits from a couple of errors from Sinner. Huge pressure on his service game as he looks to close this out.

So tight from Sinner! The shouts of encouragement for Alcaraz picked up at 0-15 on the Sinner serve and from there a backhand long and double fault brings up three break back points.

Alcaraz frames the forehand and then Sinner responds with an ace down the middle. And that’s brilliant from the Italian! Incredible hitting on the forehand side and then he puts away the smash!

Deuce - and Alcaraz nets on the backhand down low! Sinner catches the baseline but despite incredible defence from Alcaraz he produces the backhand volley to take the hold!

What a recovery from Sinner.

And then all of a sudden Alcaraz faces break points after ballooning a forehand wide at 15-30.

The backhand slices from Alcaraz finds the corner and then turns defence into attack with a perfect drop shot.

One saved - but a double fault from Alcaraz at 30-40! Sinner breaks ahead!

Extraordinary start to the third set as Alcaraz drags Sinner into lengthy holds on his opening two service games. Alcaraz had multiple break point in the first and then fought from 40-15 down in the second, flashing an incredible backhand winner down the line. Sinner emerges in tact, though.

Anyway, I’m now on Centre Court so we’ll have live updates throughout the fourth set.

Alcaraz is alive. He was never going to go down without a fight.

Backhand long from Alcaraz! The Spaniard challenges but it’s a foot over the baseline!

Match point Sinner! Tight first serve. Then the backhand catches the line! But Sinner nets! 7-7.

Bomb up the middle from Sinner! Alcaraz got a racket on it but couldn’t return. 8-7. Second match point.

Chance for Sinner on the Alcaraz second serve but he sticks the forehand into the net!

What a point! Sinner threatened with the backhand up the line off the Alcaraz forehand, but he met it at the net with the pick-up winner!

Set point again! Another incredible point! But Sinner pushes the backhand wide!

But then Sinner pushes another drop shot into the net and Alcaraz senses his chance! He picks out a brilliant angled forehand and Sinner goes long on the return! Sinner then nets and suddenly Alcaraz has three set points.

Sinner saves the first as Alcaraz nets, and then the Italian puts away the short ball with a forehand out wide!

One more chance... Centre Court is right behind Alcaraz.

Winner from Sinner! It’s a stunner! The forehand cross flashes past Alcaraz from the baseline! What a hit!

Tiebreak! Sinner holds serve to love and it means we’re going to a decider in the third.

Strong serving from both players, and Sinner levels at 3-3 with a cheeky drop shot from inside the baseline!