Valencia captain Roberto Soldado is confident of knocking Chelsea out of this year's UEFA Champions League.
The two sides meet at Stamford Bridge on 6th December with the Spanish club needing a score draw or a win to clinch their place in the last 16.
Their chances of progression improved with a 7-0 demolition of Belgian outfit Genk on Wednesday, while Andre Villas-Boas' side suffered a 2-1 defeat at group leaders Bayer Leverkusen.
Soldado bagged a hat-trick in his side's win, taking his tally to 13 for the season, and the 26-year-old believes the Blues can be beaten.
He said: "If we stay in this form, there's a good chance we can win at Chelsea.
"Wednesday was not only one of my best games, it was a complete team performance on a win-or-bust night which we all treated like a cup final.
"Our objective was always getting to the last game with an opportunity of qualifying and that's the way it is going to be."
Wednesday's defeat by Leverkusen leaves Chelsea with just one win in five games and their young manager is coming under pressure after just five months in the job.
The Londoners could only draw with Valencia when the two sides met in September, although that outcome could be enough for the Blues in December.
Soldado added: "We go to Stamford Bridge believing we have to win - but our good work means a score draw works for us too.
"Right now I'm on a great run. The Champions League suited my style last season and I really want to continue scoring goals and give the team important victories.
"I just hope we come through the test in London with flying colours."