CASTRO DE HERVILLE: AG2R-Citroen rider Clement Champoussin ambushed the favourites and surged to victory on the penultimate stage of the VueltaaEspana on Saturday as PrimozRoglic extended his lead atop the overall standings.The 23-year-old Frenchman Champoussin only turned professional a year ago, and with this first win he raised a solitary finger in celebration before thumping his chest at the finish line.He attacked in the final kilometre and done of the top contenders were prepared to lead a chase.Slovenian double defending champion Roglic of Jumbo-Visma leads the Vuelta by 2min 38sec from Movistar rider Enric Mas, while Australian Jack Haig of Bahrain Victorious climbed to third ahead of the final day individual time-trial. Pacing himself patiently all the way from the seaside start at Sanxenxo, Roglic beat his main rivals at the end as he followed the winner over the line with Yates and Mas on his tail.Sunday’s final stage is an arduous 33km run to Santiago de Compostella. It will be a test of nerves for the easily-spooked Slovenian rider, despite his large lead as cycling history is littered with last day tales of woe, not least his own.Roglic is the Olympic time-trial champion, but famously lost a major lead a time-trial on the final weekend of the 2020 Tour de France.With five short but tough mountain passes on a tough stage in Galicia on Saturday, South African Ryan Gibbons had a gut wrenching afternoon as his long-range solo escape wilted with less than 2km to go.Miguel Angel Lopez of Movistar had a bad day, allowing Haig to climb to third and Ineos’s Adam Yates climbed to fourth. Egan Bernal also slid way down the standings.Giro champion and 2019 Tour de France winner Bernal also let slip the under-25’s white jersey to Swiss Gino Mader, also of Bahrain, with the Colombian saying at the finish line he would not push to win it back on Sunday.Australian Michael Storer of the DSM team extended his King of the Mountains lead after taking part in an early attack. The 24-year-old Storer won stage seven and ten, stealing the thunder from teammate Romain Bardet.