A counter attack from yellow jersey Bradley Wiggins and Team Sky colleague Chris Froome saw the Britons move into first and second place overall after stage 11 of the Tour de France.
On a 148-kilometre route from Albertville to La Toussuire, Wiggins survived repeated attempted attacks on his commanding lead as Pierre Rolland (Europcar) triumphed.
Nicolas Roche finished 19th, six minutes and 17 seconds behind the winner and is now 13th overall. Daniel Martin was passed by Wiggins on the final climb and is now 50th.
Defending champion Cadel Evans (BMC Racing) made a short-lived attack two thirds of the way up the 22.4km Col de la Croix de Fer, the second of the day's two 'hors categorie' (beyond category) climbs.
The forlorn attempt saw him lose ground to with Wiggins two thirds of the way up the final climb.
Vincenzo Nibali (Liquigas-Cannondale), fourth at the start of the day, twice attacked on the 18km final ascent to La Toussuire, but Froome and Wiggins shared the pursuit to close the gap.
As Rolland claimed a solo success, Thibaut Pinot (FDJ-Bigmat) won the dash for the line to claim second, 55 seconds behind, with Froome third on the same time. Jurgen van den Broeck was fourth, Nibali fifth and Wiggins sixth, two seconds further adrift.
Evans rolled in 2mins 23secs behind, conceding 1:28 to Froome, who moved up to second place in the rankings.
Wiggins was set to enter tomorrow's 226km 12th stage from Saint-Jean de Maurienne to Annonay-Davezieux with a 2:05 advantage over Froome, with Nibali third, 2:23 behind, and Evans 3:19 adrift in fourth.
Van den Broeck (Lotto-Belisol) sits fifth, 4:48 behind.