Manchester United on Wednesday beat Manchester City 1-0 in a keenly contested derby in the English Football League (EFL).
Juan Mata struck to win a tight Manchester derby as United knocked out EFL Cup holders City to reach the quarter-finals.
The Spaniard pounced to drive low into the corner from Zlatan Ibrahimovic’s pull-back as United set up a home tie with West Ham.
Paul Pogba had hit a post moments earlier as the game came alive in the second period, following a first half in which neither of the bitter rivals managed a shot on target.
City boss Pep Guardiola made nine changes to his side, who have now not won in six games in all competitions.
Their best chance arrived early on when Kelechi Iheanacho headed over from six yards, while second-half substitutes Raheem Sterling and Sergio Aguero made little impact.
Victory was United’s second in five matches, and only Jose Mourinho’s fourth win in 18 meetings with Guardiola.
The match between West Ham and Chelsea played at the Olympic Stadium saw Chelsea make seven changes to the team that thrashed Manchester United 4-0 on Sunday.
The most notable inclusion was that of captain John Terry, returning from injury to the centre of a three-man defence.
Nigeria’s Victor Moses and Mikel Obi were conspicuously missing from the squad.
The crowd disturbances between rival fans marred the conclusion of West Ham’s EFL Cup fourth-round victory over Chelsea at the London Stadium.
Plastic bottles and seats were thrown towards the end of the match as hundreds of fans were involved in ugly scenes.
The flash points were a blot on what had been an entertaining night on the pitch as a much-changed Chelsea side were beaten by a cohesive and intense West Ham.
A superb Cheikhou Kouyate header before the break and an 18-yard Edimilson Fernandes strike a few minutes into the second half secured West Ham’s place in the last eight and a tie against Manchester United.
Gary Cahill swept home from close range in injury time, but it was only a consolation at the end of another difficult evening off the pitch for the Hammers.