Racist abuse, missiles from the crowd, a pitch invader and five goals in an action-packed thriller -- Sunday's 164th Manchester derby epitomized all that is good and bad about English football.
On the field, Manchester United snatched a 3-2 victory that gave Alex Ferguson's team a healthy six-point lead from second-placed Premier League champions City.
But the non-sporting incidents continued -- in tune with more than a year of controversies that have plagued arguably the world's most lucrative and widely supported domestic soccer competition, starting with the John Terry-Anton Ferdinand racism incident in October 2011.
Hooliganism was once known as the "English disease" -- but the game's malady is more pervasive than mere violence.
This time Ferdinand's older brother Rio was involved, being hit in the face by a coin as he celebrated Robin van Persie's injury-time winner.
While the former England international wiped the blood from his face, City goalkeeper Joe Hart intervened to confront a fan who had invaded the pitch -- police then hauled him from the ground.
The Greater Manchester force also reported after the match that another man had been arrested inside City's Etihad Stadium on suspicion of chanting racist abuse.
"It's disappointing that after a great game and advert for the Premier League that we are discussing this issue," said the English Football Association in a statement on Sunday.
"We will work with the clubs and authorities to identify those responsible and support the strongest sanctions available, including life bans.
"We condemn any such acts and it is simply unacceptable that any player is exposed to injury in this way. To witness Rio Ferdinand leaving the field with a cut above his eye to receive treatment is appalling."
United manager Alex Ferguson also condemned the transgressions, calling for action by the authorities as he cited similar problems during October's controversial clash at Chelsea -- which saw ref Mark Clattenburg accused of racism before being cleared, and John Obi Mikel fined and banned for confronting the official after the match.
"It was disappointing that a supporter ran on the field after Rio had been hit by a coin in the eye," Ferguson told MUTV. "It's a bit disappointing. The game didn't deserve that.
"I don't know whether they're going to stitch it or not. The same thing happened at Chelsea with all the carry-on when half a seat hit Michael Carrick and coins and lighters were thrown on. The game doesn't need that."
City released an apologetic statement afterwards promising to investigate, but Ferdinand laughed off the coin attack as he posted on his Twitter account after the game.
"What a result, 3 points! Sweet! Whoever threw that coin, what a shot! Can't believe it was a copper 2p....could have at least been a £1 coin!," the 34-year-old wrote.
"Respect to Joe Hart for protecting that idiot who ran on!! Love the banter between fans but there is a point when it goes too far...calm it!"
The problems also extended to the internet, with the Greater Manchester Police reporting on Twitter that it is investigating reports of racist tweets.
Earlier it had reported that a man had been arrested outside the Etihad Stadium on suspicion of ticket touting, but a prematch prediction from the man in charge of policing the game proved wide of the mark.
"I have every confidence this match will mirror the two derbies last season and the football will be the only talking point," Superintendent Craig Thompson said.
Last season City thrashed United 6-1 at Old Trafford on the same day that Terry clashed with Queens Park Rangers' Anton Ferdinand.
The fallout from that incident cost the Chelsea player the England captaincy, then he was cleared of racial abuse in court before being fined and banned by the English Football Association.
Roberto Mancini's team won 1-0 in the home derby on April 30 before claiming the 2011-12 league title on goal difference from Ferguson's men on the final day of the season.
Mancini's role at the Abu Dhabi-owned club has become more precarious since then, with City crashing out of the UEFA Champions League at the group stage for the second season in a row.
Sunday's defeat ended City's 21-match unbeaten run in the EPL, 15 of those this season, and halted a run of 37 matches without defeat at home which stretched back to December 2010.
Van Persie scored a last-gasp winner for United, firing in a free-kick that was deflected past Hart, whose team had fought back from a 2-0 halftime deficit.