It was a mad old night, especially a chaotic, compelling first half, with Chelsea benefiting from two own goals, prompting Derby's magnificent 4,100 fans in the shed to ask politely of their hosts, "Shall we score a goal for you?" Leicester or Southampton will play Manchester City or Fulham. "I'm so proud of my Derby County players". The 40-year-old may have made his own fortune here as a player, but he certainly didn't have much on his return as a manager.
That was the view of Chelsea assistant manager Gianfranco Zola, who faced the media ahead of the game, and provided an update on the progress of the Belgian. After Tomori's own goal Mason Mount provided a cross for Martyn Waghorn to level, leaving Maurizio Sarri raging again at the state of his defence.
The Italian admitted that Barkley was developing Lampard's goalscoring touch, but played down the comparisons, for the time being, saying: "I thought Frank Lampard getting in the box was exceptional". The Premier League is a different level. Marriott slips through Nugent and his shot from an acute angle beats Caballero but cannons off the post and bounces back to into the safe arms of the Chelsea goalkeeper.
The Premier League giants moved into the EFL Cup quarter-finals after the tight win at Stamford Bridge on Wednesday.
21' - OWN-GOAL! Chelsea 2-1 Derby: Dear, oh dear!
Hazard, who scored a sensational victor against Liverpool in the last round, has missed each of Chelsea's last two games against BATE Borisov and Burnley as a result of a back injury thought to have been suffered after some rough treatment at the hands of Manchester United. Subs: Forsyth 5, Bennett 5, Nugent 6.
This is actually the truth, Man Utd so far have conceded just three goals in 10 matches, Liverpool have conceded four while Chelsea have conceded seven.
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Attention now turns back to league action this weekend and the manager wants his side to continue the good form built up.
The Belgium worldwide came off the bench at Anfield in the previous round to score a wonder goal and set up the tie with the Rams, but he will not be repeating those heroics.
"We have two massive games coming up but we can never relax".
Lampard gave everything to Chelsea and they gave it back, in recognition of a career that yielded 211 goals in 648 appearances, saw him lift 11 major honours and nearly win the Ballon d'Or, coming second to Ronaldinho back in 2005.
GK Willy Caballero, 6 - Could do nothing about either of Derby's goals, but his distribution was poor and nothing about him inspired confidence in his defenders.
With rotation likely, Loftus-Cheek will be one of the favourites to start for Chelsea and could yet again find the net.