Mark Cavendish crashes heavily in sprint finish
Cavendish able to finish - heading for X-ray
Britain's Geraint Thomas in separate minor crash late on
Thomas retains yellow jersey
Frenchman Arnaud Demare wins stage, Peter Sagan second
It looks like it might be a long, lonesome ride for our Belgian leader, so while the peloton plods along, can I recommend last night's BeSpoke at Le Tour podcast.
OJ Borg, Simon Brotherton and Rob Hayles discuss Peter Sagan's incredible victory in Longwy and look forward to today's stage.
You might want to fast forward to four minutes, unless you want to listen to last night's news as well!
In the time it's taken 'letourdata' to get their tweet out, GvK as I'm going to call him from time to time has extended his lead to nine minutes.
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BBC Radio 5 live's OJ Borg and Rob Hayles have been busy chatting about today's stage and who might win in their Daily Pain preview.
Rob says today's finish "is slightly uphill so that means it could be another day for Peter Sagan, or Arnaud Demare".
On Mark Cavendish's chances, Rob, who won world championship madison gold with the Manxman on the track in 2005, said: "You can never write him but the lack of preparation means we may have already seen the best of him and fatigue may set in."
As for today's stage winner, Hayles has gone for Alexander Kristoff.
Rob Hayles
Former GB cyclist on Radio 5 live sports extra
"He's probably attacked hoping that someone will come with him, and the disappointment when you turn round and the peloton is just sitting there letting you go saying "see ya!"
Guillaume van Keirsbulk (I'm really hoping he's not there at the finish because his name is not the easiest to type if I'm in a hurry) looks like he's out for morning amble.
But his lead is fast-approaching seven minutes after just 20km of racing.
The peloton really is taking it steady today.
Solo breaks in the Tour are uncommon but a rather fresh-faced youngster by the name of Bradley Wiggins ended up clear on his own in 2007.
It was on stage six and seen as a fitting tribute on the 40th anniversary of the death Britain's first Tour legend Tom Simpson.
He rode clear after a couple of kilometres on the near 200km stage and built up a lead of more than 17 minutes before the peloton decided he'd had enough fun.
Wiggo was eventually caught just 7km from the finish line.
Image source, Getty ImagesA bit earlier than yesterday but here's another nugget to help the conversation flow when you get to your Sunday morning ride.
This year's Tour has just gone through Schengen - the Luxembourg town after which the Schengen agreement is named.
It was signed in 1985, took effect in 1995 and enables passport-free movement between the 26 member nations. You can read more about it here, if you need to brush up on your knowledge.
Today's race has just got under way from Mondorf-les-Bains and Guillaume van Keirsbulck of Belgium has surprised the peloton and probably himself, by setting off like a startled hare and ending up out on his own.
The Wanty-Groue Gobert rider went straight from the flag dropping but nobody else fancied getting in the break today. Just the 207km to go Guillaume...
Image source, ReutersYep, Mark Cavendish will be looking to add to his 30 Tour de France stage wins as he continues his chase of Eddy Merckx's all-time record of 34.
We all know Cav has come into the race a little under-cooked after a bout of glandular fever but he showed a bit of the old the Manx Missile yesterday in winning the intermediate sprint from the peloton.
Prior to today's stage, the Manxman said he was feeling a little tired after the exertions of yesterday, but he pointed out he saw other sprinters grimacing today.
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All eyes will be on the fast men of the peloton today because it's a fairly straightforward run from Mondorf-les-Bains to Vittel today with a bunch sprint finish expected.
Germany's Marcel Kittel will be wanting to stop the run of different winners by adding to his victory on stage two.
His compatriot Andre Greipel will be out for revenge though. The disappointment etched on his face on Sunday as he trailed in behind Kittel was clear to see.
And then, of course there's this man...
Image source, Tour de FranceThree stages down, three different winners. All of them massive names in the sport.
If proof were needed that the Tour de France is a race for the big hitters, we have already had that in abundance this week.
It's been a sensational opening three days, will stage four provide a fourth different winner?
Image source, Reuters