- West Ham overturn two-goal half-time deficit to shock London rivals Tottenham at Wembley and book their place in the quarter-finals of the Carabao Cup
- Moussa Sissoko finishes off an incisive early Spurs counter-attack involving Ben Davies, Fernando Llorente and Heung-Min Son
- Dele Alli's strike from the edge of the penalty area deflects off the head of Declan Rice and inside the far post
- Andre Ayew reduces the deficit from close range after Edimilson Fernandes' low shot is parried by Michel Vorm
- Ayew scores a second goal within five minutes by turning home Manuel Lanzini's pass
- Angelo Ogbonna heads home Lanzini's corner to secure an unlikely comeback victory
- Victory comes as a massive relief to Hammers boss Slaven Bilic before a crucial Premier League clash with Crystal Palace on Saturday, with reports suggesting that the Croatian had just two games to save his job
- Full-time: Chelsea 2-1 Everton
That is it for this particular blog, thanks for following along and keep your eyes peeled across IBTimes UK for reaction from both of tonight's Carabao Cup ties.
We will also have live coverage of the quarter-final draw at 16.00 BST tomorrow afternoon.
Until then, farewell.
Pochettino spoke fairly disparagingly about the Carabao Cup yesterday and questions will inevitably be asked about that complacent attitude after such a terrible collapse.
Spurs have preciously little time to dwell on this disappointment before travelling to Manchester United and hosting Real Madrid in the space of five days.
2-0 down at half-time, West Ham rally themselves to seal an incredible comeback derby victory that could go a long way to saving their manager's job.
They reach the last eight for the second season in succession and can take some confidence into Saturday's Premier League meeting with rock-bottom Crystal Palace at Selhurst Park. A proverbial relegation six-pointer.
Tottenham 2-3 West Ham
Alli and Eriksen throw up their hands in exasperation after Davies' deep cross is comfortably chested back to Adrian by Cresswell.
Ayew comes away with the ball after a poor cross from Eriksen is blocked. Tottenham quickly regain possession and pour forward once again.
Adrian repels Eriksen's long-range drive and it's real backs to the wall stuff for West Ham as we enter four minutes of added time.
Can they hang on to secure a vital, morale-boosting derby victory?
West Ham look to delay the inevitable Tottenham onslaught by making another change. Arnautovic replaces Lanzini.
West Ham force another corner as they look to put this tie beyond reach.
Spurs just about clear their lines and quickly race into the opposition half. Solid defending from Ogbonna and Kouyate keeps them at bay for the time being.
Georges-Kevin NKoudou for Son is Pochettino's final throw of the dice.
It's full-time at Stamford Bridge, where goals from Antonio Rudiger and Willian have sealed a 2-1 win for Chelsea over Everton. Dominic Calvert-Lewin scored a very late consolation for the managerless visitors.
The Blues join Manchester United, Bristol City, Bournemouth, Leicester, Arsenal and Manchester City in the quarter-finals.
Pochettino introduces Eriksen for the final 10 minutes in an attempt to find the goal that would send this topsy-turvy fourth round clash into extra-time.
Rose is the man to make way.
Alli shoots over before Davies has his heels clipped by Kouyate in a dangerous position just outside the area.
Trippier's curling right-footed free-kick drifts harmlessly wide.
A change apiece as Dembele replaces Llorente and Fernandes makes way for Obiang.
Sissoko blasts a woeful effort into the stands after Ogbonna rises highest to clear Rose's left-wing cross.
West Ham take the lead for the first time tonight as Ogbonna loses Alderweireld and heads Lanzini's excellent near-post corner into the back of the net.
What an absolutely extraordinary turnaround at Wembley. Pochettino will be apoplectic.
His opposite number could be saved.
Goal: Tottenham 2-3 West Ham (Angelo Ogbonna)
Alli connects well with Sissoko's cross but his powerful volley is saved by Adrian.
Alli looked to hurt himself there and will require medical attention.
West Ham have been wretched for the most part tonight, but two goals in five minutes from Ayew has them level.
Ogbonna and Carroll win a pair of headers and Lanzini pulls the ball back for the Ghanaian international to turn home another from close range.
A stunning collapse from Tottenham, who were coasting. All to play for now.
How big could this be for Bilic?
Goal: Tottenham 2-2 West Ham (Andre Ayew)
West Ham look to have taken real confidence from that goal and Vorm unconvincingly punches away Cresswell's cross after poor play from Trippier.
They barely deserve it, but West Ham and Bilic have a lifeline.
Davies gets his head to an initial corner but ends up playing everyone onside as Fernandez fizzes in a low shot.
Vorm parries the ball into the path of Ayew, who makes no mistake from a few yards out. Game on?
Goal: Tottenham 2-1 West Ham (Andre Ayew)