Internazionale reclaimed top spot in Serie A with a 2-0 home win over Frosinone on Sunday, thanks to a long-range strike from Federico Dimarco and a penalty by Hakan Calhanoglu.
The victory sent Internazionale back to the summit with 31 points, two clear of Juventus in second place. Frosinone are 12th with 15 points.
Lazio and Roma played out a 0-0 draw as both sides missed opportunities in a fiery derby clash that produced a flurry of yellow cards at the Stadio Olimpico.
Lazio had the best chance following Roma’s aggressive start, with Luis Alberto unleashing a powerful shot from outside the area that struck the woodwork midway through the first half.
Roma climb one place to seventh on 18 points, three points off the top four, while Lazio are 10th with 17. There were eight yellow cards, including one shown to the Lazio coach, Maurizio Sarri, for dissent.
A last-gasp goal by Empoli midfielder Viktor Kovalenko condemned champions Napoli to a 1-0 home loss as they squandered the chance to move up to third.
Ukrainian Kovalenko scored the winner in stoppage time, netting from inside the area as the ball bounced in off the far post.