Derby County fell to a 2-0 defeat at the hands of Premier League giants Chelsea, and were knocked out of the FA Cup.
The hosts contained Chelsea for an hour at the iPro Stadium, with Samual Eto'o tackled when he should have scored and Ramires hitting the post just before half time.
The game was fairly even in the second half, with Derby battling hard, until the away side took the lead thanks to a header by Jon Obi Mikel, from a Willian free kick.
They put the game beyond Derby when Oscar drove past Lee Grant in the Derby goal five minutes later.
Once Derby were two goals down though, they came back into the game, creating a few chances and putting Chelsea on the back foot.
Chris Martin had the best effort when he forced a smart save out of Mark Schwarzer from a tight angle. But it wasn't enough, and Derby succumbed to a second defeat this week.