Manchester City are back on top of the Premier League after a tense win over neighbours Manchester United.
In a game of few chances Vincent Kompany's first-half header gave them to a 1-0 win at the Etihad stadium.
Kompany struck from a corner on the stroke of half-time to settle a highly-charged encounter which saw City go top of the table by virtue of their superior goal difference.
The victory means that wins over Newcastle and Queens Park Rangers in their remaining games will see City claim their first league crown in 44 years.
It was at times an ill-tempered affair which mostly failed to live up to its pre-match hype.
The two managers squared up to each other on the touchline in the second half after Nigel de Jong was booked for a challenge on Danny Welbeck.
A visibly enraged Ferguson had to be restrained from confronting Mancini after the Italian complained to the officials about the yellow card.
Afterwards City captain Kompany celebrated a win that saw the blue half of Manchester seal a home-and-away double over United. "Absolutely buzzing. We've been waiting for this moment," Kompany told Sky Sports.
"It's far from over and we know that, but to give our fans two wins over United this season... we have to finish it off and we have to do it over the next two games.
"For us to get this result, we wanted it so bad. It all comes down to the dream we had when we were children, and we all want it so much."