Postpublished at 20:31 BST 2 June
*Sinner 6-1 3-2 Rublev
Sinner's hit almost twice as many winners as Rublev so far today (50 to 28).
He gets a few more as he races to 40-15.
Summary
French Open fourth round at Roland Garros
World number one Jannik Sinner overcomes Andrey Rublev 6-1 6-3 6-4
Alexander Bublik defeats Jack Draper 5-7 6-3 6-2 6-4 to end British interest in the singles
Novak Djokovic beats GB's Cameron Norrie 6-2 6-3 6-2
France's world number 361 Lois Boisson beats third seed Jessica Pegula to reach quarter-finals; Coco Gauff and Mirra Andreeva through
Listen to radio coverage from Roland Garros (UK only)
Postpublished at 20:31 BST 2 June
Rublev holdspublished at 20:26 BST 2 June
*Sinner 6-1 3-2 Rublev
This might be finished really soon. Jannik Sinner goes up 0-30, but, to be fair to Rublev, he recovers and wins the next four points on the spin to hold.
Image source, Getty ImagesLove-hold for Sinnerpublished at 20:23 BST 2 June
Sinner 6-1 3-1 Rublev*
The outfit may be "childish" but Sinner vs Rublev continues to be men against boys as the Italian holds to love.
See what I did there?
'Sinner looks like he's dressed himself for the first time'published at 20:20 BST 2 June
Sinner 6-1 1-1 Rublev
Andrea Petkovic
Former world number nine on BBC Radio 5 Live and BBC SoundsI cannot explain with words, the joy Sinner's outfit is bringing me. He looks like a 12-year-old boy that has dressed himself for the first time.
He also has this really strange hat, with a shorter rim around the outside.
Image source, Getty ImagesSinner breakspublished at 20:19 BST 2 June
*Sinner 6-1 2-1 Rublev
And there we go. The top seed has Rublev on the run and the Russian can't return a forehand on the stretch.
Jannik Sinner goes a set and a break up. Brilliant tennis from the world number one.
Image source, Getty ImagesBreak point Sinnerpublished at 20:18 BST 2 June
Sinner 6-1 1-1 Rublev*
Sinner will have another chance as Rublev knocks a backhand into the net.
'Absolutely mind-blowing how well Sinner is hitting the ball'published at 20:16 BST 2 June
Sinner 6-1 1-1 Rublev*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC SoundsJannik Sinner always looks like he is playing with a little satchel on his back because he does look very young and a bit schoolboy-ish.
But his tennis is anything but that - it is just absolutely mind-blowing how well this guy is hitting the ball. Andrey Rublev hasn't really been able to sustain the level that Sinner has been coming at him with.
Image source, Getty ImagesBreak point savedpublished at 20:16 BST 2 June
Sinner 6-1 1-1 Rublev*
But then the Italian tries too be a little too cute and knocks a backhand long.
Break point Sinnerpublished at 20:16 BST 2 June
Sinner 6-1 1-1 Rublev*
What can you do? He's just so, so good. Sinner - on the run - hits a backhand around the net against the back baseline.
Image source, Getty ImagesBreak point savedpublished at 20:15 BST 2 June
Sinner 6-1 1-1 Rublev*
Saved with a strong top serve that just clips the line.
Break point Sinnerpublished at 20:14 BST 2 June
Sinner 6-1 1-1 Rublev*
A long, long rally, but Jannik Sinner's on a roll now and has Rublev on strings with the Russian eventually netting.
Deuce on Rublev's servepublished at 20:13 BST 2 June
Sinner 6-1 1-1 Rublev*
From 40-0 to deuce. Rublev hits a very loose forehand long.
Postpublished at 20:13 BST 2 June
Sinner 6-1 1-1 Rublev*
Rublev starts to shake his head again. At 40-0 he hits a backhand long and then wallops a forehand into the net. 40-30. Suddenly it's a tricky game to get out of.
Image source, Getty ImagesSinner holds to lovepublished at 20:10 BST 2 June
Sinner 6-1 1-1 Rublev*
He had a bit of wobble in game one, but since then Jannik Sinner has looked unflappable on serve.
He holds to love to level up the second.
Listen to radio coveragepublished at 20:08 BST 2 June
BBC Radio 5 LiveYou can listen to commentary from Roland Garros now - click the link at the top of this page or tune into BBC Radio 5 Live.
Rublev holdspublished at 20:07 BST 2 June
*Sinner 6-1 0-1 Rublev
That'll do Andrey Rublev a world of good. The Russian holds to 15 with a deep forehand right into the corner.
Halfway through the game he ended up controlling a bouncing dead ball by trapping it with his shoe against the turf. Looked pretty impressive - it had the crowd cheering.
Image source, Getty ImagesPostpublished at 20:03 BST 2 June
Sinner 6-1 0-0 Rublev*
Thirty-one minutes, that's how long the opening set took. The sun begins to set in Paris.
Game and first set Sinnerpublished at 20:02 BST 2 June
Sinner 6-1 0-0 Rublev*
Sealed with an ace.
The world number 15 is being made to look very ordinary.
Image source, Getty ImagesSet points Sinnerpublished at 20:01 BST 2 June
*Sinner 5-1 Rublev
Rublev nets a return. Three set points.
Sinner serving for setpublished at 20:01 BST 2 June
*Sinner 5-1 Rublev
Sinner goes up 30-0 with a class serve of his own.