and Peraud, followed by Nibali and his team-mate Jakob Fuglsang, went ahead.
CHRIS Froome conceded four seconds to Romain Bardet
on the Col d'Izoard, but took another step towards his fourth Tour de France title as Warren Barguil won stage 18.
The Italian national champion now leads the Tour by six seconds from Froome, Frenchman Bardet
closing to within 25 seconds of yellow in third place.
CHRIS FROOME crashed but saw his overall lead grow as Romain Bardet
won a damp, treacherous stage 19 of the Tour de France to Saint-Gervais Mont Blanc.
But at the summit, only Nairo Quintana was able to grab a handful of seconds on Froome who crossed the line ninth, 36 seconds behind Bardet
If the yellow jersey contenders do find themselves close enough to compete for stage honours there may be value in backing progressive Frenchman Romain Bardet
, who is progressing into rider capable of mixing it with the best in the mountains.
In the overall standings Froome finished in a time of 29 hours 59 minutes and 31 seconds to give him the win by 12 seconds from Bardet
with Martin a further seven seconds back, just two seconds in front of Porte.
Bagneres De Luchon: Frenchman Romain Bardet
and American Tejay van Garderen's Tour de France podium hopes suffered a major blow yesterday when they lost considerable ground in the 16th stage won by Australian Michael Rogers.
TOUR DE FRANCE CHRIS FROOME was booed in Yellow Jersey rival Romain Bardet
's back yard - but produced a stunning fightback to preserve his lead on the Tour de France.
BMC's Australian Richie Porte was pipped to third - and the final bonus seconds on the day - by Froome, while France's great hope for a home win, Romain Bardet
, came in fifth, just ahead of Britain's Simon Yates.
Outright best prices: 7-4 A Contador (Coral), 3 C Froome (Betfair, Power), 5 R Porte (general), 18 M Landa (Betway, Coral), 20 R Bardet
(Betway), 22 T Pinot (general), 25 D Martin (Betfred, Betway), 33 A Yates (Betway), 40 bar.
Froome finished Thursday's 186.5-kilometres stage from Gap to Saint-Jean-de-Maurienne in 12th place, 3mins 02secs behind stage winner Romain Bardet
(Ag2r La Mondiale).