Franck Kessie's penalty was his ninth goal of the season in all competitions for AC Milan
AC Milan moved four points behind Serie A leaders Inter Milan by beating Roma.
Franck Kessie put Milan ahead from the penalty spot after Roma's Federico Fazio fouled Davide Calabria.
But Roma's Jordan Veretout equalised with a fine finish from 18 yards out after five minutes of the second half.
However, after striker Zlatan Ibrahimovic went off to protect a groin injury, Milan scored the winner through Ante Rebic's shot on the turn following Alexis Saelemaekers' pass.
Milan will play Manchester United in the Europa League last 16 over two legs on 11 and 18 March in matches that would see Ibrahimovic, who spent a season and a half at Old Trafford, potentially feature against his former side.
The Swedish striker appeared to suffer a groin injury midway through the first half, but was still able to play until the 58th minute and was heavily involved.
Ibrahimovic, 39, has scored 14 Serie A goals this season and had numerous chances to add to that total but had a strike tipped over, another effort cleared off the line, a goal disallowed, he backheeled a chance wide and also headed over.
Milan's Simon Kjaer headed against the crossbar and Rebic and Saelemaekers had shots saved as the visitors dominated, before Kessie converted a penalty.
The referee had originally not given a spot-kick, but changed his mind after watching the incident on a pitchside monitor following a video assistant referee check.
Roma's ex-Manchester United and Arsenal midfielder Henrikh Mkhitaryan had a goal disallowed and shot wide with only goalkeeper Gianluigi Donnarumma to beat before Veretout made it 1-1, but Milan regained the lead again eight minutes later.
Second-placed Milan had failed to win in their past four games in all competitions and are aiming for their first league title since 2010-11.
Earlier on Sunday, Inter won 3-0 at home to Genoa with goals from former Manchester United trio Romelu Lukaku, Matteo Darmian and Alexis Sanchez.
- Line-upsMatch StatsLive Text
Line-upsRoma
Formation 3-4-2-1
13López23Mancini4Cristante20Fazio2Karsdorp17Veretout14Villar37Spinazzola7Pellegrini77Mkhitaryan21Mayoral
- 13López23Mancini4Cristante20FazioBooked at 41minsSubstituted forda Silva Peresat 62'minutes2Karsdorp17VeretoutSubstituted forDiawaraat 79'minutes14VillarSubstituted forEl Shaarawyat 70'minutes37Spinazzola7PellegriniBooked at 89mins77MkhitaryanBooked at 80mins21MayoralSubstituted forPedroat 79'minutes
Substitutes
- 5Nunes Jesus11Pedro24Kumbulla27Pastore31Pérez33da Silva Peres42Diawara83Mirante87Cerantola Fuzato92El Shaarawy
AC Milan
Formation 4-2-3-1
99Donnarumma2Calabria24Kjaer23Tomori19Hernández8Tonali79Kessié56Saelemaekers10Calhanoglu12Rebic11Ibrahimovic
- 99Donnarumma2CalabriaBooked at 85mins24Kjaer23Tomori19Hernández8TonaliSubstituted forMeitéat 83'minutes79Kessié56SaelemaekersBooked at 46minsSubstituted forCastillejo Azuagaat 83'minutesBooked at 90mins10CalhanogluSubstituted forDÃazat 45'minutes12RebicSubstituted forKrunicat 67'minutes11IbrahimovicSubstituted forda Conceição Leãoat 56'minutes
Substitutes
- 1Tatarusanu5Dalot7Castillejo Azuaga13Romagnoli15Hauge17da Conceição Leão18Meité20Kalulu21DÃaz33Krunic46Gabbia90Donnarumma
Referee:Marco GuidaMatch StatsHome TeamRomaAway TeamAC MilanPossessionHome54%Away46%ShotsHome18Away17Shots on TargetHome8Away9CornersHome5Away8FoulsHome14Away9Live TextPost update
Match ends, Roma 1, Milan 2.
90'+6'Full Time
Second Half ends, Roma 1, Milan 2.
90'+5'Post update
Foul by Henrikh Mkhitaryan (Roma).
90'+5'Post update
Franck Kessié (Milan) wins a free kick in the defensive half.
90'+5'Booking
Samu Castillejo (Milan) is shown the yellow card for a bad foul.
90'+5'Post update
Rick Karsdorp (Roma) wins a free kick in the defensive half.
90'+5'Post update
Foul by Samu Castillejo (Milan).
90'+4'Post update
Attempt saved. Henrikh Mkhitaryan (Roma) left footed shot from the centre of the box is saved in the top centre of the goal.
90'+3'Post update
Attempt missed. Pedro (Roma) left footed shot from the centre of the box misses to the right. Assisted by Stephan El Shaarawy.
90'Post update
Lorenzo Pellegrini (Roma) wins a free kick in the defensive half.
90'Post update
Foul by Simon Kjaer (Milan).
89'Booking
Lorenzo Pellegrini (Roma) is shown the yellow card.
89'Post update
Foul by Gianluca Mancini (Roma).
89'Post update
Rafael Leão (Milan) wins a free kick in the defensive half.
87'Post update
Stephan El Shaarawy (Roma) wins a free kick in the attacking half.
87'Post update
Foul by Samu Castillejo (Milan).
85'Booking
Davide Calabria (Milan) is shown the yellow card for a bad foul.
85'Post update
Leonardo Spinazzola (Roma) wins a free kick on the left wing.
85'Post update
Foul by Davide Calabria (Milan).
83'Substitution
Substitution, Milan. Soualiho Meité replaces Sandro Tonali.
Page 1 of 7rewindpreviousNavigate to the next pagenextNavigate to the last pageforward
- Sounds of the Nineties: Weezer, Green Day and more on the ultimate pop-rock mixtapeNintendo Nostalgia and games for phones: Press X to Continue hosts Tom Grennan
Source: bbc.com