Inter Milan edged 10-man Roma 1-0 and leapfrogged their opponents into first place in the Serie A table.
Chilean defender Gary Medel, making his 54th appearance for Inter, scored his first goal for the club in the 31st minute.
His right-footed strike from 25 yards beat visiting goalkeeper Wojciech Szczesny and was enough to halt Roma’s five-match winning run in the league.
Roma had plenty of chances to equalise but were denied by Inter keeper Samir Handanovic, who made a string of a great saves as the hosts held on for their seventh win of the campaign.
Juan Cuadrado came on as a substitute and scored his first Serie A goal of the season at the death to earn struggling Juventus a 2-1 victory over Torino.
With the game looking as if it would end in a draw, Juve’s Leonardo Bonucci saw his header hit the crossbar and moments later Chelsea’s on-loan winger Cuadrado tapped in substitute Alex Sandro’s cross to earn Juve three points.
Torino defender Cesare Bovo had scored his first Serie A goal since May 2011 to cancel out Paul Pogba’s opener six minutes into the second half.
The win is Juve’s fourth of the domestic campaign and has lifted them above Torino into 10th place.