Vincenzo Nibali

Tour de France leader Chris Froome came under attack and lost 30 seconds but still retained a healthy advantage after yesterday’s 19th stage in which defending champion Vincenzo Nibali claimed a vintage victory.

With one mountain stage remaining before the final procession into Paris, Froome leads by 2:38 from Colombian Nairo Quintana, who attacked the Briton in a gripping finale to finish second and cut the leader’s advantage.

Spain’s Alejandro Valverde, who finished 2:26 off the pace among a group that included several of the race’s top ten, remains third, 5:25 behind Froome.

Nibali, who had dropped out of contention in the race after a tough first week, broke away from a group of top riders 61 kilometres from the finish.

On his way to victory, the Italian caught and dropped Frenchman Pierre Rolland in the final climb, an 18-km ascent to La Toussuire at an average gradient of 6.1 per cent.

The Astana rider crossed the line 44 seconds ahead of Quintana, who attacked Froome with about six kilometres remaining, finishing 30 seconds ahead of the Briton.

Nibali made his move six kilometres from the top of the gruelling ascent to the col de la Croix de Fer and did not look back.