Chelsea have a 2-0 half-time lead over Fulham in their Premier League meeting at Craven Cottage.
Goals from David Luiz and John Terry have given the Blues the upper hand against their local rivals.
The hosts had a glorious chance to go ahead within the opening three minutes, but Bryan Ruiz lashed his volley over from six yards following Sascha Riether's cross.
Chelsea's first opportunity came soon after as Frank Lampard's volley on the turn was gathered by Mark Schwarzer.
Fulham continued to look the more likely side to score before the visitors went ahead in spectacular style through Luiz with 30 minutes on the clock.
The Brazilian fired in an unstoppable drive from 30 yards that gave Schwarzer little chance as it flew into the top corner.
Despite a good response from the home side, Chelsea doubled their advantage two minutes before the break as Terry went unmarked to plant a header past Schwarzer from Juan Mata's cross.
