Manchester City are arguably the best team in England at the moment.
But it wasn't until 2011 that the Citizens really started to make their mark on world football, after completing a number of astronomically expensive transfers first, of course. Before then Manchester United ruled the roost.
Chelsea and Arsenal, and Blackburn, all had dominant spells in the Premier League following its inception in 1992. But it was Sir Alex Ferguson's Red Devils who won a staggering 12 of 19 titles before Man City's first success in 2011. City were bought out by Abu Dhabi royalty in 2008 and began spending big money immediately.
Ferguson dubbed the up-and-coming Sky Blues as United's "noisy neighbours", seemingly dismissing their chances of ever reaching the dizzying heights of the Red Devils.
But City showed Ferguson and the world they were much more than that in October 2011 when they pulled off the unthinkable at Old Trafford - battering their biggest rivals 6-1.
United went down to 10 men in the contest, with Johnny Evans being shown a red card. But the sending off did little to justify the shocking defeat, as City went on to win their first title in the same season.
Reflecting on the defeat after the match, Ferguson revealed his misery and hit out at two senior professionals he believed should have shown more common sense. He said: "It was a bad day, there is no doubt about that, it was my worst ever day."
"Jonny Evans's sending off was a killer for us. With 10 men we kept attacking - it was crazy football and ended up being an embarrassment. We should have just said: 'We've had our day'.
"I believe you shouldn't bring down a man on the edge of the box. Evans is young but he should let Balotelli go through and see what he can do. I thought with the experience we've got - Rio Ferdinand, Patrice Evra - they would have defended more but we just kept attacking. Sometimes there has to be common sense about it. It was a bad day.
"I can't believe the scoreline. Even as a player I don't think I ever lost 6-1. That's a challenge for me too."
