On this day in 1975 Manchester City cruised to a 4-0 victory over Manchester United in the League Cup fourth round.

Dennis Tueart scored a brace, with Asa Hartford and Joe Royle netting one apiece as Tony Book’s side claimed the derby bragging rights in front of 50 thousand fans at Maine Road.

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City opened the scoring in the first minute, as Tueart fired home from close range to net one of the quickest goals in derby history after Alan Oakes’ free-kick caused a scramble inside the penalty area.

Hartford doubled our lead when he smashed home Royle’s knockdown from Willie Donnachie’s pinpoint delivery and Tueart added a third inside 30 minutes with a fine solo goal that saw him carry the ball from the half-way line before picking out the bottom corner with a low drive.

Royle completed the rout 11 minutes from time, sliding in to convert a Peter Barnes’ cross at the front post.

Despite the convincing manner of victory, it proved to be a bittersweet night for City, as the late, great Colin Bell was stretchered off with a terrible knee injury which kept him out for more than 18-months following a tackle by United’s Martin Buchanan.

You can watch all the goals in the video above.

Read: Colin Bell: The day City welcomed back the King