The Derby della Madonnina was a thrilling encounter between AC Milan and Inter Milan, decided by a Walter Samuel goal as the Nerazzurri held onto the lead despite playing much of the second half with 10 men due to Yuto Nagatomo's red card.
Here is a complete set of ratings for both sets of players in what will be a pivotal moment in both teams' season as we enter the international break.
Despite some smart saves to keep Milan in the match, it was Cristian Abbiati's mistake that should have gifted the Nerazzurri a two-nil lead.
The Rossoneri captain casually passed the ball out from the back and did not notice Diego Milito lurking between him and his target, Philippe Mexes. The Argentine spurned the chance and reprieved the Milan stopper.
Came off injured, but was otherwise untroubled on his side of the pitch.
Philippe Mexes is gradually returning to the form that enticed Milan to swoop for the free-agent who was so impressive with Roma a few seasons ago.
The French centre-back was calm on the ball and kept Diego Milito quiet throughout.
Mario Yepes continues to be afforded starts when the more talented Francesco Acerbi is banished to the sidelines.
The Colombian commits too many fouls and is often exposed for pace, particularly by Alvaro Pereira in the closing stages of the match.
Solid enough match from the youngster who is enjoying a sustained spell in the first team.
Got forward with vigour and made a decent shot cutting inside on his favoured right foot, but was sacrificed in the second half and substituted as Milan pushed for the equaliser.
Nigel De Jong managed to screen the back four well throughout the night and use the ball well when Inter defended deep.
The former Fiorentina star is settling into his new role with the Rossoneri, distributing the ball well and came closest to scoring for Milan with a fierce strike from distance that beat Samir Handanovic and a post.
Unable to make a real impact in the final third despite being fed the ball more often than Stephan El Shaarawy, who played on the opposite flank.
Functioned better in a deeper role in the second half when afforded more time and space.
Dreadful. Rarely used the ball intelligently, often driving into crowded areas and losing possession when better options were available.
Really quiet night for the Rossoneri's in-form player, who struggled to make an impact, often being crowded by Esteban Cambiasso and Walter Gargano.
Poor night for the Spaniard. The former Barcelona star never hides, often showing for the ball and attempting the right idea, although the execution is far away at this point.
Injected some much-needed pace and energy to the side, making numerous surging runs to penetrate a stubborn Inter defence and perhaps showed why he should have started.
Runs well with the ball and moves it quickly which is something that Milan need to do more.
Terrible dive in the second half in a desperate attempt to win a penalty which led to him being booked.
Giampaolo Pazzini missed a glorious chance in the second half and appears to have lost all the confidence that he found when he scored a hat trick against Bologna a few weeks ago.
Samir Handanovic was solid and provided confidence to the three centre-backs in front of him.
Not forced into many saves from Milan, but dealt with the little asked of him.
A rock at the back, who dominated Milan's attackers with some excellent close marking and then scored the winning goal with a nice header at the back post.
Juan Jesus is slowly fulfilling his potential with Inter, using his exceptional pace and power to cover his full-backs when required.
Beginning to string together a consistent run of form with tremendous ability to sense the danger and intercept the ball.
Inter's future in defence is ironing out the mistakes he used to possess in his game and managed to track the clever movement of Bojan Krkic and Robinho when he came on in the second half.
The captain put in a tireless effort on the wing but failed to deliver any meaningful penetration in the final third.
Tracked Stephan El Shaarawy superb when he drifted inside from the wing.
Walter Gargano has settled into the Inter side seamlessly with his tenacious tackling being a huge asset to the Nerazzurri.
Helped to track a woeful Kevin-Prince Boateng comfortably throughout the match.
Esteban Cambiasso continues to inspire the Nerazzurri with his all-action midfield performances.
The Argentine broke up the Milan attacks well and distributed to the wide areas in order to maintain possession when down to 10 men.
The Japanese international failed to contribute going forward and was foolishly sent off in the opening stages of the second half for a second yellow, jeopardising his side's victory.
Wasteful in possession and often dribbled into trouble without observing others in better positions. Substituted at half-time.
Diego Milito was not at his best on Sunday night, missing an incredible chance to put the Nerazzurri 2-0 up.
Antonio Cassano was unable to deliver a goal against his former club and often struggled to link with his team mates with Nigel De Jong tracking him all over the pitch.
A decent impact at half-time, adding energy and bite to the midfield, especially needed when Yuto Nagatomo was foolishly sent off.
Offered great defensive application when Milan pursued that illusive equaliser.
Tremendous pace and energy to drive forward and relieve the Inter defence when the opportunity arose.
No real impact for the Argentine, who recently returned from injury.