Lautaro Martinez has scored again but Inter Milan had to be content with a share of the spoils as the Serie A leaders drew 1-1 away to second-placed Juventus.
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Martinez's 13th league goal of the season cancelled out Dusan Vlahovic's opener in the Derby d'Italia on Sunday night.
Inter remain two points above Juventus. Third-placed AC Milan are six points behind their city rivals, with defending champions Napoli two points further back in fourth. Both Milan and Napoli played on Saturday.
Inter face another tough trip next weekend when they visit Napoli.
It was a matchup in Turin between two fierce rivals with much at stake. Inter were looking to move five points clear while Juventus knew they could leapfrog into the lead.
Both sides had early chances in a match that was intense and entertaining from the start.
Juventus broke the deadlock in the 27th minute through a move started and finished by Vlahovic. The Serbia forward won the ball and sent Federico Chiesa down the left before racing into the area to collect the return and steer the ball into the bottom right corner.
The home side's advantage lasted just six minutes before Marcus Thuram and Martinez - who have become one of European soccer's most dangerous attacking duos - combined again for the equaliser.
The move began with Inter goalkeeper Yann Sommer and quickly moved forward where Thuram crossed and Martinez got in front of Juventus defender Federico Gatti for an angled drive into the bottom left corner.
Former Juventus winger Juan Cuadrado was brought on in the 69th minute to loud boos from the home fans. Cuadrado joined Inter on a free transfer in July after eight seasons at Juventus, where he won a number of trophies including five Serie A titles.
Paulo Dybala and Stephan El Shaarawy scored late as Roma beat lowly Udinese 3-1 and closed the gap on the top four.
Roma - who had a poor start to the season - moved up to fifth, three points behind Napoli and 11 points behind Inter.
Jose Mourinho's side took the lead in the 20th minute when Dybala floated in a free kick and Gianluca Mancini beat his marker to head the ball in across the face of goal.
Udinese equalised in the 57th when Martin Payero whipped in a cross for Florian Thauvin to head in at the back post.
Roma restored their advantage nine minutes from time with a great team move finished when Romelu Lukaku backheeled the ball to Dybala, who drilled it into the bottom left corner.
Lukaku also had a hand in Roma's third, in the final minute, as he controlled a long ball before laying it off to Edoardo Bove, who passed it first time for El Shaarawy to sweep into the far bottom corner.
Domenico Berardi scored twice, including a stoppage-time winner, to help Sassuolo to a 4-3 victory at Empoli.
Sassuolo moved up to 13th, five points above the relegation zone and 18th-place Empoli, who had surprisingly won at Napoli in the previous round.
Substitute Ilario Monterisi also scored in stoppage time to send Frosinone to a 2-1 win over Genoa.
Australian Associated Press