Manchester United clash with bitter rivals Manchester City at Old Trafford on Sunday in a Premier League summit meeting that will go a long way towards deciding this season’s title race.
Record-setting City are leading the way and hold an eight-point lead over second-placed United thanks to a 13-match winning streak.
With so much at stake, the latest encounter in the 136-year-old rivalry promises to be one of the most explosive.
AFP Sport highlights five matches that explain why the derby day animosity runs so deep in Manchester.
Manchester United 1-3 Manchester City, Division One, March 1968
With 10 games of the season remaining, United were second in the table and City third, while both teams had games in hand on leaders Leeds United.
George Best found the net for United but City claimed victory courtesy of goals from Colin Bell, George Heslop and Francis Lee. Both teams were in contention on the final day.
City took the title thanks to a 4-3 win at Newcastle United, condemning United to a runners-up spot.
Five Memorable Manchester Derbies
