Gianluca Mancini headed home the winning goal in the Derby della Capitale as Roma defeated rivals Lazio 1-0 at the Stadio Olimpico.
In a typically tight affair, Mancini’s 42nd-minute header proved the difference between the two sides as Daniele De Rossi won his first Rome derby as a coach.
Daichi Kamada did have the ball in the net for Lazio but the Japanese international was in an offside position from Matteo Guendouzi’s defence-splitting pass.
While Lazio failed to bounce back from the Coppa Italia semi-final defeat to Juventus, Roma consolidated their grip on fifth in Serie A.
De Rossi’s side started the game on the front foot, winning a corner inside the first minute, with Leandro Paredes’s drive an early warning for Lazio.
Lazio captain Ciro Immobile had an early sight of goal for the Biancocelesti when they won the ball high up the pitch and Immobile struck a right footed effort into the side netting.
At the other end, a Roma free-kick landed at an unmarked Diego Llorente, who saw two half-volleys blocked, the second of which bounced just wide of a post.
Lorenzo Pellegrini, back in the Roma team after suspension, then tested goalkeeper Christos Mandas with a long-range effort, and the Giallorossi spurned another opportunity when Zeki Celik headed over from close range.
Roma's goal did arrive before half-time, though – Mancini powering a header beyond the despairing reach of Christos Mandas.
After the break, Pellegrini narrowly curled wide a free kick before Romelu Lukaku surged forward and played in Stephan El Shaarawy, who smashed the woodwork.
Lukaku almost tapped in from Bryan Cristante’s centre, before Kamada saw what he thought was an equaliser disallowed for offside.
Tensions heated up between both sets of players with an altercation between Guendouzi and Paulo Dybala sparking the fire, but Roma ultimately kept their discipline to hold off late Lazio pressure and further their hopes of Champions League qualification.
De Rossi's Roma resurgence continues
Roma stretched their unbeaten run to seven league matches to keep their Champions League ambitions alive.
Roma dominated possession throughout the match and midfielder Pellegrini was a welcome return to the midfield, though striker Lukaku was rarely involved with just eight touches in the first half.
The Giallorossi did manage their breakthrough after neat intricate play earned a corner and Dybala’s delivery was met by Mancini, for his fourth league goal of the season.
They could not build on the dominant first half after the break, showing a different side of their game to limit Lazio to few clear-cut chances.
Lazio's European hopes fading
Lazio’s four-match unbeaten streak against their rivals in the 183rd edition of this derby came to an end.
They have now lost six of their last seven matches in all competitions and sit four points off European qualification.
They offered little in the first half, with no shots on target as Roma dominated proceedings and they have still not won a Serie A match when behind at the break.
Coach Igor Tudor made three changes at half-time, including taking off Immobile, and Lazio managed to push Roma deeper into their own half, but Mile Svilar remained largely untested.