Nigel de Jong grabbed the only goal as Milan bettered bitter rivals Inter to create a rare bright spot in their forgettable Serie A campaign.
On a day when Juventus completed a title defence in which they have barely passed a glancing look in the direction of their traditional foes, the Milan-based sides illustrated why they have not challenged for a UEFA Champions League place, let alone the Scudetto, in a contest lacking quality.
Indeed, while the fixture historically bears huge significance at the top of the table, the main factor surrounding this encounter was its impact on Milan's hopes of qualifying for the Europa League.
Although Europe's secondary competition hardly seems befitting of a club of Milan's stature, Clarence Seedorf’s men did at least bolster their hopes and they are now just a point behind sixth place.
De Jong was the hero, powerfully heading home a fine free-kick from Mario Balotelli, for whom the assist will have been extra sweet given it came against his former club.
Inter did at least show some added fight after going behind, but Milan held on the claim just a second win in the last seven derbies.
The tone was immediately set as Walter Samuel dived into a crunching challenge on former team-mate Balotelli.
That was to prove one of the few memorable moments during the opening exchanges, however, as both sides struggled for fluency.
As if to illustrate the sloppy nature of the contest, one of the few pieces of ingenuity - a fine Adel Taarabt throughball - was completely wasted when Mattia De Sciglio hit a shot tamely into the side-netting.
That effort was in stark contrast to the one produced by Kaka when the next good opening arrived.
The Brazilian ran on to a searching long ball from De Jong, who had just dispossessed Jonathan in unsurprisingly robust fashion, before unleashing a superb half-volley that rattled against the crossbar.
It was Inter who created the first opportunity of the second period, although Mauro Icardi could only mis-hit a clever, pulled-back corner over the crossbar.
A set-piece almost proved crucial at the other end, too, as Philippe Mexes headed Kaka's curling centre just wide.
Inter paid for not heeding that warning as De Jong powerfully headed Balotelli’s wonderful delivery home with 65 minutes gone.
Suddenly awakened, Inter pressed forward immediately and were almost rewarded when Hernanes just missed the target.
Balotelli saw late attempts to cap his solid performance with a goal thwarted, yet it mattered little as Milan held on for the victory.
Inter, by contrast, offered little in the closing stages - with Javier Zanetti in particular left to reflect on a disappointing finale, as he was denied what would have been a farewell derby appearance by failing to get the call from the bench.
|2||M. De Sciglio|
|34||N. de Jong||65' 89'|
|Coach: C. Seedorf|
for A. Poli 72'
for Kaká 76'
for K. Constant 85'
|No gratitude in football - Spalletti saddened by Ranieri sacking|
|Alli not to blame for Tottenham´s Europa League exit - Pochettino|
|Mourinho pays tribute to axed Leicester boss Ranieri|
|Europa League Review: Spurs crash out, Stindl stuns Fiorentina, Lyon destroy AZ in record-equalling|
|Bastia punished over Balotelli abuse|
|Eriksen blames Tottenham´s shock Europa League exit on poor finishing|
|Ranieri sacking a brutal reminder of football´s necessary lack of sentiment|
|Tottenham 2 Gent 2 (2-3 agg): Alli sent off as Kane own goal sends Spurs out|
|Jokanovic signs new Fulham deal|
|Serie A top three setting ´incredible´ pace, says Eder|
|Ranieri sacked by Leicester City|
|Coutinho: Klopp lets us do whatever we want|
|Lampard to be honoured with Chelsea tribute|
|Bolasie set for second knee surgery|
|Rooney rejects Chinese fortune to stay at United|
|Falcao has silenced his critics - Jardim|
|Clement backs Mawson to shackle Chelsea stars ahead of ´special´ Stamford Bridge return|
|Happiness more important than money - Bacca rejects new China approach|
|Lewandowski the perfect number nine, says Jancker|
|Digne tips PSG for fifth consecutive Ligue 1 title|
|Cedric thinks Euro 2016 final will help against Manchester United|
|Infantino praises progress on Qatar 2022 worker conditions|
|Manchester United have strength in depth to win quadruple, says Young|
|Ibrahimovic on PSG´s Barca victory: Win or lose, they talk about me|
|Robbery, Thiago irreplaceable at Bayern - Matthaus|
|Griezmann will ´definitely´ join Manchester United, claims Petit|
|Manchester United selling Rooney now would be odd - Neville|
|Rooney named China´s fifth most popular player, Ronaldo on top|
|Payet always loved Marseille - Digne|
|Arsenal midfielder Cazorla set to miss rest of season|
|Alba wants Isco at Barcelona|
|Bilic worried injuries will derail Carroll´s England hopes|
|Aguero ability was never in doubt for Fernandinho|
|Nani thigh injury tempers Valencia´s Real Madrid joy|
|Matip confident Liverpool will make top four|
|Rooney still has the quality to play in Europe, says Bilic|
|Koscielny wants Wenger to stay at Arsenal|
|Pogba record will soon be broken - Kahn|
|Ramos hurting but calm after Real Madrid´s Valencia setback|
|De Boer would love to manage in the Premier League|
|Wenger criticism is impossible - Nasri defends embattled Arsenal boss|
|It´s good to talk - Sagna urges better communication from Manchester City defence|
|CONCACAF Champions League Review: Vargas scores as Tigres UANL are held|
|Jovetic: We were much better than Leicester|
|Victory star Berisha set to debut for Kosovo|
|Pjaca keen for more chances after first Juve goal|
|Allegri hails ´champion´ Alves|
|´Going to China? Madness´ – Keane urges Rooney to stay in Europe|
|Nuno rues Telles red as Porto retain hope|
|Socceroos to host Brazil in Melbourne|
|Sampaoli rues Schmeichel heroics|
|Sevilla president unimpressed by ´unjust´ winning margin|
|Allegri praises Pjaca for attitude change|
|Mkhitaryan keeping fingers crossed over injury|
|Casillas left frustrated by Alex Telles red card|
|Anything can happen at King Power Stadium – Away goal lifts Schmeichel|
|Ranieri hails Leicester´s ´big heart´ in Sevilla loss|
|Krasnodar celebrate eighth anniversary by eliminating Fenerbahce|
|Home bird Rooney not suited to China - Phil Neville|
|Ramos rejects claims of bad Real Madrid attitude|
|Porto 0 Juventus 2: Substitutes Pjaca and Alves give Bianconeri command|
|Sevilla 2 Leicester City 1: Vardy´s strike tees up second leg after Schmeichel heroics|
|Madrid lead is not worth anything – Zidane|
|Dropped Bonucci must adapt to the rules – Marotta|
|I cannot do what Man City did at Chelsea - Mourinho withering over FA Cup schedule|
|Marcelo: Real Madrid must learn from horror start at Valencia|
|Manchester United head to Wembley brimming with confidence – Smalling|
|Valencia 2 Real Madrid 1: Zaza stunner hands title hope to Barcelona|
|Manchester United duo Mkhitaryan and Carrick set to miss EFL Cup final|
|Alba: Luis Enrique the best coach for Barca|
|Sorry for that poor guy - Sane apologises after costing punter huge windfall|
|Saint-Etienne 0 Manchester United 1 (0-4 agg): Mkhitaryan on target before injury scare|
|Kessie dreaming of Manchester United move|
|Kane refuses to blame ´incredible´ Wembley for Champions League exit|
|Mkhitaryan limps out of Manchester United Europa League clash|
|De Sciglio back in AC Milan training|
|Perez ´really comfortable´ after settling at Arsenal|
|Lallana signs three-year extension at Liverpool|
|Lyon have already discussed replacing Lacazette - Aulas|
|Low pleased to avoid fatigue after Euro 2016 campaign|
|Some teams are beaten before kick-off - Hazard hails Chelsea home form|
|AFC Champions League Review: Misery for history-making Yuen-ting, Ramires boosts Jiangsu|
|Spalletti not interested in Europa League favourites tag|
|Ventura: Balotelli´s latest signs not positive|
|Vela not expecting Real Sociedad Champions League return|
|Schone renews for two years at Ajax|
|Pochettino calls for patience in Tottenham trophy hunt|
|Demirbay earns two-year Hoffenheim extension|
|Origi eyeing first team place at Liverpool|
|Tottenham legend King encourages Alli to keep his edge|
|Pochettino: Spurs must wait for Rose return|
|Romero eyes Europa League title ahead of birthday trip to Saint-Etienne|
|Mowbray tasked with saving struggling Blackburn|
|Four more years? Celtic´s Dembele not stressing amid Real Madrid links|
|RB Leipzig or Salzburg Champions League ban ´hypothetical´ - UEFA|
|Manchester United have world-class players in every position - Forster|
|James: Zidane´s rotation does not affect Real Madrid|
|Redan to snub Manchester United and sign Ajax deal|
|Giovinco turned down China move ´for now´ - agent|
|Guardiola wanted to destroy Monaco´s 4-4-2, says Fabinho|
|Sagna hails Stones after ´vital´ Manchester City goal|
|Deulofeu loves AC Milan but future ´depends on Barcelona´|
|Monaco lacked intelligence, says frustrated Falcao|
|That is why Manchester City wanted me - Guardiola relishes Champions League thriller|
|Tianjin deny Rooney bid but admit Aubameyang talks|
|Deportivo Saprissa 0 Pachuca 0: Champions League quarter-final evenly poised|
|Gameiro angered by substitution in Atletico win|
|´I give nothing for free´ – Mourinho tells Shaw to learn from Mkhitaryan|
|Champions League quarter-finals still possible for Monaco, says Silva|
|Guardiola asks me for more, more, more - Aguero happy to fight on at Manchester City|
|It was like ice hockey - Monaco vice-president stunned by Champions League clash|
|Proud Griezmann eyes more Atletico history|
|Toure marvels at Caballero heroics in Manchester City-Monaco thriller|
|Buffon hopes to play well against Casillas|
|Schmidt: It is easy to see how Atletico Madrid have reached two finals in three years|
|Falcao penalty miss was key – Jardim|
|Guardiola: If one team can score a thousand, million goals it is Monaco|