Jordan Ibe, Chris Martin, Craig Forsyth and Johnny Russell goals saw Derby to a 4-0 victory over Birmingham in the Sky Bet Championship.
Derby's manager Steve McClaren heaped praise on his players after their impressive 4-0 away win over Birmingham.
Norwich grabbed a last-gasp 2-2 draw as Derby threw away the chance to regain top spot in the Sky Bet Championship.
Steve McClaren felt Derby's recent exertions caught up with them after his side had to hang on for a 2-2 draw against Norwich.
Chelsea beat 10-man Derby 3-1 at the iPro Stadium on Tuesday to advance to the last four of the Capital One Cup.
Steve McClaren says his team were robbed after Jake Buxton was sent off during Derby's 3-1 defeat to Chelsea.
Chelsea manager Jose Mourinho hailed the attitude of Cesc Fabregas in their Capital One Cup win at Derby.
Richard Keogh has warned Chelsea that Derby have improved since their last meeting.
Live only on
More of the games that matter on Sky Sports
All the gossip from the morning editions
Pick your Premier League club's starting XI
Predict six scores to win the £250,000 jackpot!
Pick your Sky Sports Fantasy Football team