Sky Bet have installed Swansea as the new favourites for the Capital One Cup following their shock 2-0 semi-final first-leg win at Chelsea on Wednesday.
The Swans had their price slashed from 5/1 to 11/10, as goals from Michu and Danny Graham either side of half-time mean manager Michael Laudrup is on the verge of his first final in his maiden season in English football.
Despite their deficit, four-time winners Chelsea are 2/1 to qualify for the final and 9/4 second favourites to go on and win it, should they conquer their mountain to climb at the Liberty Stadium later this month.
League Two side Bradford also take a two-goal lead into their second-leg against Aston Villa, but Swansea, who were as long as 50/1 before the tournament started, are considered to be in the strongest position to lift the trophy.
The Bantams created a shock of their own on Tuesday night, embarrassing Villa 3-1 at Valley Parade. However, the Premier League outfit are odds-on (30/100) to beat Bradford in the second-leg, and Evens to qualify for the final.
Villa are 7/2 to win the cup for a sixth time while Bradford, who have never won the competition, are 13/2 outsiders despite their first-leg heroics, a price which has been well backed by optimistic punters - only Swansea have received more outright wagers since the completion of the first-legs.
Sky Bet also offer a Name The Finalists market, with a Swansea v Bradford Wembley date considered the most likely at 7/5, given their respective positions. Punters are leaning towards the value, though, with a Chelsea v Villa final well backed at 5/1.
Sky Bet football trader Chris Spicer said: "The two underdogs have made an absolute mockery of the betting odds, forcing us to completely revamp our prices after the first leg.
"Aston Villa could yet overturn the deficit in their home leg with Bradford, but many will fancy Swansea to hold onto their lead over Chelsea at the Liberty Stadium."
Meanwhile, Chelsea manager Rafa Benitez's price on being the next Premier League manager to leave his job has been cut from 16/1 to 10/1 following consecutive home defeats.