Polka dot jerseypublished at 15:18 British Summer Time 20 July 2016
13.9km to go
Rafal Majka makes it three out of three on climbs today, taking the maximum points at the top of Col de la Forclaz. Thomas Voeckler follows him over the line.
Froome extends yellow jersey lead to 2mins 27secs
Rival Quintana struggles
Zakarin wins the stage with late break
Stage 17: 184km from Berne to Finhaut-Emosson
Chris Osborne
13.9km to go
Rafal Majka makes it three out of three on climbs today, taking the maximum points at the top of Col de la Forclaz. Thomas Voeckler follows him over the line.
18.4km to go
And while Tejay van Garderen has a forward-movement malfunction, Peter Sagan has a wardrobe malfunction.
The green jersey man has just been caught by the peloton, and gives them all a smile.
18.8km to go
Well, if you had an little cheeky outside bet on Tejay van Garderen to win the Tour, you can wave your money goodbye.
The American has popped. He looks like he's cycling through treacle as he tumbles off the back of the peloton.
He was eighth in the yellow jersey standings - Richie Porte, seventh, will now carry the hopes of BMC.
20.2km to go
Alexey Lutsenko's lead of the race is about to come to an abrupt end as a group including Stef Clement and Rafal Majka hunt him down.
20.4km to go
So, it was Movistar who decided to up the pace in the peloton, and it's Winner Ancona, of Movistar, who is dropping off the back.
I make that two team-mates around Nairo Quintana, compared to the five around Team Sky's Chris Froome.
Rob Hayles
Former GB cyclist on BBC 5 live sports extra
"The thing about Chris Froome is it's all about the Tour de France for him. It's his one focus up to this point - of course he'll have the Olympics in a couple of weeks' time.
"He is changing and evolving as a bike rider - the way he acts on the bike is certainly different to a coupe of years ago. He stamps his authority.
"He seems to want to win it in a different way. His attacking down the hills is very different to how we imagined he would do it.
"I'd like to think he would look at different events in he future - the Giro or the Vuelta - and maybe more on one-day racing."
22.9km to go
Movistar are the ones increasing the speed of the peloton, but Team Sky seem up for it and say 'fine by us'.
Both teams are leading out the peloton.
23.4km to go
Alexey Lutsenko has dropped Tony Gallopin and is on the charge by himself at the front of the race.
#bbccycling
quinney_newland: I'm a big fan of the Tinkoff team. Who doesn't love a trio of Oleg Tinkov, Peter Sagan and Alberto Contador?!
Chris Painter: Across the whole of sport, is there a better example of a team player than @GeraintThomas86? Any team with him in gets my vote!
Samuel Duff: I used to support this guy named Lance and became a fan of cycling, but then something came up and I stopped liking him... #bbccycling
Lance... Lance... rings a bell, but I can't picture him.
24.3km to go
Team Sky have driven the peloton at a bit more of a clip - they've dropped the gap to 11mins 21secs.
There's a Movistsar rider dropping off the back, giving Nairo Quintana one less team-mate around him.
Today, Colombia celebrates its declaration of independence - 206 years ago.
It feels like it's been that long since the little Colombian Nairo Quintana made an attack on the yellow jersey.
But it's all set up for him - comes alive in the last week of stage events and loves to climb.
Oh, and his only ever Tour stage win came exactly three years ago to the day.
Now or never Nairo, now or never.
25.3km to go
Two intrepid, or should that be foolish, riders have attacked off the front of the breakaway.
They are Tony Gallopin and Alexey Lutsenko - you've gone early boys. Good luck.
BBC Radio 5 live sports extra
Here's the bottom of the climb the peloton are about to climb, beautifully shot by commentator Rob Hatch.
You can listen to Ron and Rob Hayles right now on BBC Radio 5 live sports extra, and by clicking the audio button at the top of this page.
27.5km to go
The gap from the breakaway to the peloton - who are just about to engage the climb - is 13mins.
#bbccycling
I can almost see the stench, Tom.
28.4km to go
Peter Sagan has run his race.
After picking up maximum sprint points and helping hist team-mate Rafal Majka in the breakaway, the Slovak has burst his bubble and is very happy to let everyone else disappear into the distance.
Rob Hayles
Former GB cyclist, BBC Radio 5 live cycling analyst
At this stage of the Tour, everyone is tired. The levels of fatigue will be high, so attacking among the favourites could be risky.
On today's final climb, the gradients are steep. So if you attack and it fails, you could lose time as there is no road to recover.
For an attack on Froome to succeed. He must first be isolated from his team-mates. Then forced to go into the red.
This will probably take more than one rider, and possibly more than one team. There seem to be few, if any, up to the task.
We've been disappointed by the lack of attacks on Chris Froome so far - his could feasibly a time to do it.
I asked Rob Hayles what the perfect ingredients are for an attack - and whether today is the day...
Here's what he said.
There's only 30km of the 184km left to go.
Easy, right?
Think again.
These two cracking climbs are next up. You won't be able to read any of the figures in the graphic above, but they give you a very good idea of just how steep everything is going to be.
The steepest bit? The uphill finish.
Nobody is going to bother to trouble Peter Sagan on this sprint - he adds another 20 points to his green jersey tally.
He is coasting to a fifth successive victory in the points classification.