Colombian Jarlinson Pantano showed he is a master of the descent as he claimed his maiden Tour de France win on the 15th stage, while Britain's Chris Froome retained the overall leaders yellow jersey.
Pantano outsprinted breakaway companion Rafal Majka (Tinkoff) of Poland at the end of a 160-km trek in the Jura mountains to give his IAM Cycling team, who will be folding at the end of the season, a first victory on the Tour.
"I dreamt of this all my life, I'm so happy," said Pantano.
"Majka had won several Tour stages (three) and I was wary of him in the finale but I had good sensations. I knew that if I was catching him in the descent I'd have a good chance to win."
Briton Froome retained the overall lead after his Team Sky easily controlled feeble attacks from top-10 riders Fabio Aru, Alejandro Valverde and Romain Bardet.
Frenchman Bardet's attack, however, hurt American Tejay van Garderen, who lost 1:28 to the leading riders and slipped from sixth to eighth overall as his hopes of a podium finish in Paris took a serious knock.
Froome leads Dutchman Bauke Mollema (Trek-Segafredo) by 1:47 and third-placed Briton Adam Yates (Orica-Bike Exchange) by 2:45.
A 30-man group broke away on the first of the six ascents of the day, up to the Col du Berthiand.
It featured seven Tour stage winners including 2014 champion Vincenzo Nibali, Frenchmen Alexis Vuillermoz, Pierre Rolland and Thomas Voeckler, Dutchman Tom Dumoulin, Majka as well as Spain's Ruben Plaza.