Geraint Thomas is the new leader of the Tour de France after storming to victory up La Rosiere on Wednesday.
The Team Sky rider kicked clear of Tom Dumoulin before overtaking solo leader Mikel Nieve in the closing stages of an enthralling ride from Albertville.
Thomas' burst sees him take over from Greg Van Avermaet at the top of the general classification, the Welshman sitting one minute and 25 seconds clear of team-mate Chris Froome, who crossed the line in third place.
While only 108.5 kilometres in length, stage 11 provided plenty of twists and turns as the main contenders jostled to assume control of the maillot jaune.
Alejandro Valverde tested his rivals around the midway point, but the Spaniard's bravery went unrewarded as he slipped off the pace set by the leading pack to be quickly swallowed up by the peleton.
Instead it was Thomas who struck a telling blow on the climb to the finish line, breaking away from a group that included Froome with around 5km to go.
He caught up with Dumoulin and Damiano Caruso and then had enough left in the tank to reel in Nieve, who faded badly towards the end to cross in fifth place.
SKY THE LIMIT AS FROOME LOOMS
There was always going to be a new leader after stage 11 - even Van Avermaet, who admitted he had reached his "maximum" after claiming fourth place on Tuesday to remain in yellow, knew as much.
Thomas, the closest challenger to the Belgian at the start of the day, seized his opportunity as Team Sky flexed their muscles in the mountains, giving them the top two in the standings as Froome lurks ominously behind his colleague.
"I knew there was a good chance [of being in yellow], but I didn't know how everyone else was going to ride," Thomas told Eurosport.
"To wear the yellow jersey is always a massive honour. I managed to do it last year, so to do it two years on the trot is pretty nice.
"We were expecting attacks. When they go it's never nice to see them riding away, but we had confidence in each other."
STAGE 11 RESULTS
1. Geraint Thomas (Team Sky)
2. Tom Dumoulin (Team Sunweb) +00:20
3. Chris Froome (Team Sky)
4. Damiano Caruso (BMC Racing) +00:22
5. Mikel Nieve (Mitchelton - Scott)
1. Geraint Thomas (Team Sky) 44:06:16
2. Chris Froome (Team Sky) +1:25
3. Tom Dumoulin (Team Sunweb) +1:44
1. Peter Sagan (Bora-Hansgrohe) 339
2. Fernando Gaviria (Quick-Step Floors) 218
3. Dylan Groenewegen (Lotto NL-Jumbo) 132
King of the Mountains
1. Julian Alaphilippe (Quick-Step Floors) 61
2. Serge Pauwels (Team Dimension Data) 49
3. Warren Barguil (Team Fortuneo-Samsic) 40
Stage 12 travels from Bourg-Saint-Maurice Les Arcs to Alpe d'Huez, a name synonymous with the Tour but making a first appearance since 2015. The 175.5km journey includes trips up the Col de la Madeleine and the Col de la Croix de Fer, but it will be all about the finish on another day that could be crucial for the leading protagonists.
|Henry taking positives from opening Monaco defeat|
|A-League Review: Mariners held as Bolt considers move|
|Dominant Svitolina ends Kvitova hoodoo in Singapore|
|Pereira warns Juventus to expect ´pumped up´ Manchester United|
|D´Antoni backs NBA to ´sort out´ Lakers-Rockets brawl|
|Mixed feelings for champion Marquez after Dovizioso crash|
|Bolt offered contract by Central Coast Mariners|
|Anthony accuses Rondo of spitting after Lakers-Rockets brawl|
|Martial insists he has good relationship with Mourinho|
|Bautista to replace Lorenzo at Phillip Island|
|Emery wanted Lacazette at Paris Saint-Germain|
|Wallabies centre Hodge suffers fractured ankle|
|Koepka claims top ranking with CJ Cup win|
|Dramatic Dovizioso crash gifts Marquez MotoGP title in Japan|
|LeBron´s home debut ends in defeat, Walker makes NBA history|
|Rondo, Ingram and Paul exchange punches in Lakers-Rockets clash|
|Dodgers to face Red Sox in World Series after beating Brewers|
|Valverde doesn´t care about extending Barca contract|
|Qualifying speed a ´positive surprise´ for Ferrari´s Vettel|
|I was in a different headspace – Hamilton revels in Austin pole|
|Barcelona can cope without Messi – Pique|
|Allegri: Juventus abandoned Genoa clash|
|Sale: Hospital visit was because of belly button ring|
|Valverde accepts Barcelona will miss Messi|
|No Messi or Ronaldo in El Clasico for first time since 2007|
|Barcelona have not won a Clasico without Messi since his debut|
|Ramos calls for Real Madrid unity after latest loss piles pressure on Lopetegui|
|Hamilton has title in sights after storming to Austin pole|
|Inter, El Clasico and more - the games Messi will miss with broken arm|
|End of Messi-Ronaldo duel good for LaLiga - Simeone|
|Messi out of Clasico with fractured arm|
|Awesome Ashton marks Sale bow with hat-trick|
|Klopp hopes for positive Henderson prognosis amid Liverpool injury issues|
|Benitez ´convinced´ Newcastle can survive despite seventh defeat|
|Barcelona 4 Sevilla 2: Messi injured but champions go top|
|Kovac relieved by Bayern´s timely victory|
|Strasbourg 2 Monaco 1: Sy howler and Grandsir red card cost Henry in first match|
|Leicester City defender Chilwell signs new six-year contract|
|PSG´s Tuchel hopes Verratti and Di Maria can face Napoli|
|Liverpool star Salah had no fear during scoring drought|
|Alonso´s 2019 plans not damaged by McLaren´s IndyCar decision|
|Edinburgh outclass troubled Toulon, Wasps and Bath play out thrilling draw|
|Barca concern as Messi substituted with worrying arm injury|
|Howe: South coast derby draw a fair result|
|Our heads were in Manchester – Allegri left fuming at Juventus´ loss of focus|
|Derby County 2 Sheffield United 1: Marriott blunts Blades with 77th-minute winner|
|We have so many problems – Jokanovic alarmed by Fulham defensive woes|
|Huddersfield Town 0 Liverpool 1: Salah snaps winless streak|
|Pellegrini ruing injuries after Yarmolenko hurts ankle|
|Villarreal 1 Atletico Madrid 1: Simeone´s side denied LaLiga top spot|
|Gracia: Not easy to dominate Wolves like that|
|Isner´s Finals hopes hindered by Stockholm defeat|
|Dyche incredulous at refereeing decisions in Man City thrashing|
|Juventus 1 Genoa 1: Champions´ winning run ends despite record Ronaldo goal|
|´Fantastic´ Lamela urged to find consistency by Pochettino|
|You don´t want to lose any players - Young speaks out on Wade NFL speculation|
|Championship Review: Smith gets off to a winning start, Leeds beaten|
|Guardiola hails extraordinary Fernandinho after Burnley drubbing|
|Pochettino lauds Lloris as one of world´s best after West Ham heroics|
|Paris Saint-Germain 5 Amiens 0: Ten wins in a row for PSG as Neymar rests|
|Cristiano Ronaldo nets record 400th league goal|
|Marcelo backing beleaguered Lopetegui despite Madrid slump|
|Garcia dazzles to hit the front at shortened Valderrama Masters|
|Cardiff City 4 Fulham 2: Paterson gets Bluebirds off the mark|
|Newcastle United 0 Brighton and Hove Albion 1: Benitez´s men bottom after dismal defeat|
|West Ham 0 Tottenham 1: In-form Lamela settles London derby|
|Manchester City 5 Burnley 0: De Bruyne returns in comfortable win|
|Wolves 0 Watford 2: Capoue and Pereyra turn form book on its head|
|Bournemouth 0 Southampton 0: Howe´s side stifled by Saints|
|Prove you´re crazy about Inter - Spalletti rallies players ahead of Milan derby|