Coincidence or conclusive proof? Take your pick. In their first game under Marcelo Bielsa in which they had not spied on their opponents' training session the day before, Championship leaders Leeds United succumbed to their sixth defeat of the season. Those who think the crime is an outrage will claim this result, sealed by a stunning strike from Sam Clucas and a tap-in from Joe Allen, illustrates the competitive advantage the Yorkshire side have been enjoying thanks to the clandestine antics ordered by their Argentinian boss. Joe Allen celebrates doubling Stoke City's lead against Leeds United at the bet365 stadium Allen secured victory for the Potters with a goal in the 88th minute Midfielder Sam Clucas celebrates giving Stoke the lead against Leeds United Clucas' second goal for the Potters came just four minutes into the second half Those who think Spygate is an unnecessary sideshow, may point to an excellent performance from a fired-up home side keen to impress new manager Nathan Jones and a red card for Leeds defender Pontus Jansson as the key behind the Potters success. The answer is probably closer to the latter than the former. Stoke - organised and clever - were superb. Leeds enjoyed plenty of possession but could not find a way though until Ezgjan Alioski found space in injury time to register the final act. Two things stood out from an otherwise boring first-half - the atmosphere and Charlie Adam being Charlie Adam. These clubs have history and the volume level was turned up on a freezing Staffordshire afternoon. Leeds defender Pontus Jansson was given his marching orders after a tackle on Benik Afobe We did not have to wait long for a Spygate reference. After two minutes chants of 'We're Leeds United, we'll spy where we want,' were belted out of a packed away end, quickly followed by 'The Football League's corrupt'. Adam, never backwards in coming forward, was quick to have a pop back at the travelling Yorkshire folk who had poked fun at his figure when he went to take a corner. The effervescent 33-year-old then had a word in Pablo Hernandez's ear after the Leeds midfielder had the temerity to fall over when Adam tripped him. Elsewhere, the visitors bossed the opening exchanges, with academy product Jack Clarke a frequent menace on the right wing. It was following another of the 18-year-old's lively runs that Hernandez scuffed wide from close range. Stoke's Tyrese Campbell swapped Manchester City for the Potters when turning professional. And the 19-year-old, who scored his first two goals for Stoke last weekend, looks some prospect. The son of Arsenal star Kevin has inherited his father's pace and when he was tugged back by Adam Forshaw Peter Etebo brought a fine save from Bailey Peacock-Farrell with the resulting free-kick. Four minutes after the break the hosts were in front when Leeds twice failed to deal with a low cross from the right and an incoming Clucas pinged a sweet, first-time shot across Peacock-Farrell and into the bottom corner. Nathan Jones earned his first victory as Stoke manager at the third attempt MATCH STATS Stoke City (3-5-2): Butland 7; Williams 6.5, Martins Indi 6.5, Shawcross 6.5; Bauer 6.5, Allen 8, Adam 7, Etebo 7.5, Clucas 7; Afobe 6.5, Campbell 6.5 (McClean 66, 6.5) Subs: Federici, Ince, Berahino, Crouch, Edwards, Woods Manager: Nathan Jones 8 Leeds United (4-1-4-1): Peacock-Farrell 5; Ayling 6.5, Cooper 6.5, Jansson 6 (OFF 76), Alioski 6.5; Forshaw 7; Clarke 6.5, Hernandez 7, Klich 6.5 (Stevens 75, 5.5), Harrison 5 (Roberts 61, 5.5); Roofe 6 Subs: Casilla, Davis, Shackleton, Halme, Gotts Manager: Marcelo Bielsa 6 Referee: Gavin Ward 7 Star Man: Allen (Stoke) Attendance: 28,586 'Your spy must be rubbish,' one Stoke punter behind the press box quipped. Stoke appeared to be more physical than their opponents. At times it was hard not to wonder what impact summer signing Peter Etebo, an all-action midfielder, would have had in the Premier League last season. The Nigerian hassled and bullied all afternoon and was influential. Leeds had a penalty shout turned down when Hernandez hit the deck from an Allen challenge. The Spaniard's theatrics may not have helped him. They have been given. Things got worse for the visitors on 76 minutes when Jansson, already on a yellow, attempted to bring down a clean through Benik Afobe. He failed to do so, but referee Gavin Ward was unimpressed and when Peacock-Farrell denied the Stoke striker, he produced a second yellow. Jansson later engaged in handbags with a steward who tried to divert him down the tunnel as he attempted to give his shirt to a Leeds supporter. Despite their numerical disadvantage, Leeds began to press and would have been level if not for a magnificent save from Jack Butland, who somehow managed to parry a close-range Luke Ayling rocket header from a Hernandez corner to safety. However, the hosts sealed it when substitute James McClean seized on an unnecessary Peacock-Farrell punch to cross for Allen to slot home at the far post. Deep into injury time Bielsa's men halved the deficit when Alioski found space on the left of the area to slot home but it was a mere footnote. The defeat to Stoke leaves Marcelo Bielsa's Leeds United one point clear atop the Championship All rights reserved for this news site dailymail and under his responsibility