Raducanu will serve first to start the second set, as the rain thunders onto the Centre Court roof.

This feels like a must-win game, but Raducanu slumps a backhand into the net and faces 15-30 early in the second.

Sun clips two net-cords in a row but Raducanu steadies on the rally and outlasts her opponent.

Raducanu roars as the return from Sun drifts long! BIG hold for Raducanu! Sun fires long again.

The crowd are undoubtedly behind Ben Shelton here, roaring every point he wins but Jannik Sinner just about holds serve after that crucial break back a short while ago.

With his opponent serving to stay in the set, Shelton takes the game to 30-30 but goes long with a forehand and then is left staring in disbelief as Sinner crunches a magical passing shot by him to make it 5-5. Now it’s Sinner receiving the roars of approval from the fans – an unbelievable shot!

THUMP! An ace from Sun brings up two set points. Raducanu parries the forehand return and saves the first as Sun fires long.

Can she save the second: Raducanu reads the Sun forehand down the line… does this drop in?

A positive opening point from Raducanu as she is able to use some of Sun’s pace against her, directing a backhand into open court.

A nervy point arrives on 30-30, but Sun slices into the net.

Raducanu thinks she has found an ace but is denied by a let, and Sun attacks the second serve to get to deuce.

A poor miss from Raducanu: the backhand is into the net and gives Sun a chance to retake the double break.

Incredible hitting from Sun… Raducanu sends a loopy ball back, and it helps! Raducanu finds some pace again, and Sun nets!

Deuce. A thunderous forehand winner from Sun brings up a second chance, but Raducanu finds the big serve.

However on deuce, Raducanu’s second-strike forehand finds the net. Third break point for Sun:

Raducanu hangs up another defensive shot and this time Sun powers away the forehand drive.

She will serve for the set next.

Ben Shelton appeared to be cruising in this third set, banging down 138mph aces and holding serve with little fuss until Jannik Sinner stepped things up and snatched the break back in style to make it 4-3.

We’re now back on serve and the Italian’s effectiveness from the baseline in this match has been remarkable. Can Sinner break again to see this match over the line?

Sun looked to be heading towards a simple hold but a double-fault on 40-0 throws in some doubts. Raducanu, though, slices long on the return and Sun holds.

Raducanu is roaring after every point she wins and shows steel to hold from 15-15. Sun floats a return long of the baseline. A decent response.

Centre Court attempts to lift Raducanu and there’s a chance on 15-30 as Sun drifts a shot long of the baseline.

Sun’s serve catches Raducanu out wide, but then she finds the pass with a stunning backhand winner crosscourt.

Break point: double fault from Sun!

Well, well, well… Could that be the game that turns this match on Court 1? Ben Shelton has broken Jannik Sinner at the first time of asking in the third set. The first break point Sinner has faced all day and Shelton outlasts him in a mammoth rally that ends with the world No 1 netting.

Huge roars from the Court 1 crowd, who are desperate to see a competitive match and the support continues as Shelton consolidates the break with a hold. He’s suddenly 3-0 up in the third.

This is an unbelievable start from Sun, who has come out swinging.

She brings up 0-40 for the second game ina row for two volleys at the net and a brilliant backhand winner.

Raducanu then fires wide and Sun gets the double-break.