Hello and welcome to live coverage of stage 18 of the Tour de France - the second of two Alpine stages that could well decide who ultimately wins the yellow jersey. It's a 179.5km ride from Briancon to the Col d'Izoard, where we will witness the first ever summit finish on this mythical climb.
Tour de France
Stage 18 | Mountain | men | 20.07.2017
Mikel Landa is up to fourth place at the expense of Fabio Aru while Barguil leapfrogs Contador into ninth place.
Here was the moment Warren Barguil made history by becoming the first rider to win a Tour stage atop the Col d'Izoard.
Today's top ten in Stage 18 on the Izoard...
Barguil's second victory on this race - and the unprecedented finish on the Izoard - sees him pocket another 40pts in the KOM competition and move onto an insurmountable 169pts. What a Tour he has had.
That means Bardet moves into second place, 23 seconds behind Froome now. Uran may have lost a second there because there was a little gap... Yes, indeed, it's a two-second drop for Uran, who is now 29 seconds behind Froome on GC.
Atapuma holds on for second place - just - before Bardet pips Froome for third ahead of Uran, and with it, takes the final four bonus seconds.
Warren Barguil is all smiles as he rides the final few hundred metres knowing that he has made history on the Col d'Izoard today. What a victory for the Frenchman.
Barguil is going to take his second win of the race here - and move further up the overall standings. What a way to secure the polka dot jersey...
Bardet and Atapuma pass under the flamme rouge - and the Frenchman puts in a little dig to drop the Colombian.
It's not over yet! Froome, Uran and Bardet have caught Landa - and they're closing in on the two leaders...
But Uran and Bardet manage to rejoin Froome once the road heads uphill again... And further up the road, Barguil has caught Atapuma!
CHRIS FROOME ATTACKS! The yellow jersey wants to win this stage and distance his rivals and he's dropped them just ahead of the small downhill segment in the Casse Deserte.
BARDET ATTACKS: The Frenchman makes the first move and only Froome and Uran can follow - for now.
It's getting very close... Barguil is 30 seconds behind Atapuma while Landa is 20 seconds further back and just ahead of the yellow jersey group.
Barguil has caught and passed both Lutsenko and Gallopin. What a Tour he's having. To be fair, Landa has also caught Lutsenko. Further back, Aru is digging deep behind the yellow jersey group.
The Sky train disintegrates as Kwiatkowski hits the wall and Nieve peels off - allowing Mikel Landa to accelerate and ride clear of the yellow jersey group. Intriguing...
Atapuma has 30 seconds on Gallopin, 35 seconds on Lutsenko, 55 seconds on Barguil and 1:20 on the yellow jersey group. Meanwhile, Contador has been caught by Froome et al.
Dan Martin is the first of the GC favourites to attack - and his acceleration sees Fabio Aru dropping back form the group of favourites.
Chris Froome still has Mikel Nieve, Mikel Landa and Michal Kwiatkowski with him. What a formidable team Sky is. They trail Atapuma by 1:35.
Barguil is looking very good here - he's just 1:20 behind Atapuma now...