Britain's Tom Pidcock (22) won the 12th stage of the Tour de France, a 165.1-km Alpine trek between Briancon and L'Alpe d'Huez on Thursday.
The Ineos-Grenadiers rider prevailed from the day's breakaway with an attack 3.3 km into the final climb, a 13.8km effort at an average gradient of 8.1%.
South African Louis Meintjes (30) was second and Britain's four-time champion Chris Froome (37) took third place.
Dane Jonas Vingegaard (25) retained the overall leader's yellow jersey after resisting a couple of attacks from his main rival, defending champion Tadej Pogacar (23) of Slovenia.
