Geremi marked his Chelsea debut with the winning goal in a 2-1 friendly victory at Crystal Palace.
The Cameroon international signed from Real Madrid as part of Roman Abramovich's Stamford Bridge revolution, and he made an immediate impact. Geremi struck late in the first half after Mikael Forssell's opening goal had been cancelled out by Dougie Freedman.
Forssell, who used to play for Palace on loan, struck in the fifth minute after capitalising on a poor clearance. Freedman then lobbed Carlo Cudicini six minutes before the break before former Middlesbrough loanee Geremi stole the show with a 25-yard free-kick.