Welcome to our live coverage from the Paris Roubaix as Fabian Cancellara looks to defend his title on the draining cobblestones.

He's played a supporting role for a number of years now, but his starring role today will taste so sweet for Van Summeren. Cancellara came so close, but was utterly let down by his team - and spent much of the latter stages of the race doing the hard work for other riders. Thanks for joining our live coverage of the 2011 Paris-Roubaix

That's Van Summeren's first win in four years, after fifth and eighth-placed finishes here in 2009 and 2008 respectively. The 6'5" Belgian adds his name to the illustrious list of former winners of the Queen of the Classics, after an extraordinary finish to an extraordinary race

What an extraordinary race! Fabian Cancellara of Leopard Trek finishes a wonderful comeback to just nick second place, 22 seconds behind, ahead of Rabobank's Maarten Tjallingii

JOHAN VAN SUMMEREN WINS THE 2011 PARIS-ROUBAIX!

Van Summeren storms into the velodrome to raucous cheers from the crowd, and Cancellara can't reach him! The lofty Belgian is on his way around the track, as the chasing arrive at the velodrome!

The last time-check we had was 40 seconds between Van Summeren and Cancellara, and it's surely too late for him to win this! Take nothing away from Cancellara though, this has been a quite staggering finish!

Magnificent from Cancellara as he finally gets away from Hushovd on the approach to the Roubaix velodrome! Incredibly, the Swiss catches up with the chasing trio of Tjallingi, Bak, and Rast! Surely he can't do it?!

Van Summeren reaches the outskirts of Roubaix now, and he's heading for the last section of cobbles. There's an uphill drag first, but Tjallingi is really starting to suffer now!

Ballan takes over pace-setting ahead of Cancellara, and their gap from the front is 42 seconds now. It's likely to be two little too late for the defending champion, though, as his group finally start working together

And it's Maarten Tjallingi now who has made his move and stormed ahead of Bak and Rast! He closing in on Van Summeren, and lies just 20 seconds back with 7km remaining! Bak and Rast sit a further 10 seconds back

Cancellara can't shake off Hushovd, and it looks like he's dropping off slightly! The Leopard Trek rider won't want to carry the world champion all the way to the line, and he's definitely sitting back. Up top, Van Summeren's lead is being rapidly eaten into by Rast and Bak, and it looks like we're moments away from having a front three again!

Cancellara is riding angry now, but Van Summeren has made his move. The Belgian does look to be blowing slightly, and he's off his seat, but there's only 10km here and he could be on the verge of the biggest win of his life! Bak and Rast are still chasing him, 25 seconds back

This is cat and mouse cycling at its best, and Cancellara is leading Hushovd on an incredible charge towards the leaders. They're scything through the back markers like a hot knife through butter, but they're still 50 seconds behind Van Summeren who is up top on his own

Cancellara's group finally springs into life! The Swiss lets the gap hit one minute before launching another attack to try and reel in the leaders. Hushovd only just manages to swerve around a motorcycle as the pair push, but then Van Summeren and Tjallingi immediately launch rapid attacks of their own from the lead group!

The riders are barely visible through the dust as they tackle the four-star Camphin-en-Pevele cobbles, and things get even tougher as the lead group enters the five-star Carrefour de l'Arbre. The lead group of Lars Bak (HTC), Gregory Rast (RadioShack) Johan Van Summeren (Garmin-Cervelo) and Maarten Tjallingi (Rabobank) is now 50+ seconds clear of Cancellara and his third-placed group

HTC-Highroad's Lars Bak and John Degenkolb are pushing the lead group hard and force a split, but Guesdon has caught the second group again after that puncture! The 39-year-old Italian won this race way back in 1997 - what a romantic result it would be if he could sneak a win here 14 years later! They're 45 seconds clear of Cancellara's group

Guesdon suffers a puncture! He's had a fantastic race - pushing hard in the front group - but will drop back now

Here comes sector six, and a four-star difficulty at Cysoing! The chasing group are now 40 seconds behind, after Cancellara and Hushovd's spat. HTC is working hard to stretch the gap, and Bernhard Eisel will really fancy his chances!

Flecha is back! Cancellara will be so frustrated - he's had absolutely no help at all today! Flecha takes advantage of the ongoing tactical dispute between Cancellara and Hushovd, and powers back to join their chasing group! The big question now is whether anyone in the top group can press on and really punish Cancellara

Cancellara refuses to work any harder at the front of the trio, with Hushovd and Ballan refusing to move up top! This is an intriguing situation, as Cancellara discusses the situation with the Garmin car! This is a real game of poker between Cancellara and Hushovd, with both riders refusing to budge!