Serie A round-up: Paulo Dybala hits double as Juventus march on

Paulo Dybala scored twice as Juventus thrashed 10-man Lazio 3-0 to take what could prove to be a decisive nine-point lead into the Serie A run-in.

Only a serious collapse in the last four games will open the door for Napoli to snatch the title from the reigning champions, who opened the scoring in Turin through Mario Mandzukic just before half-time.

Dybala's double - from a penalty shortly after Lazio lost Patric to a red card, and then at the end of a Sami Khedira pass - put Juve in a position to rubber-stamp the Italian championship with four more points.

Meanwhile in the capital, Francesco Totti emphatically staked his claim for a new contract with a brace from the bench that boosted Roma to a dramatic 3-2 victory over Torino.

The 39-year-old striker has struggled for game time at the Stadio Olimpico this term but a haul of three goals from his last two games could convince the Giallorossi to give him one more year.

Andrea Belotti's penalty and Josef Martinez's late goal gave Torino hope they could triumph in the Eternal City, yet Totti's double and Kostas Manolas' header earned Roma all three points.

Sebastian De Maio dealt a heavy blow to Inter Milan's hopes of reaching the Champions League places by firing Genoa to a 1-0 victory at the Stadio Luigi Ferraris.

Roberto Mancini's men failed to make the most of a flurry of chances in the first half and were second-best after the break, with centre-back De Maio wounding them at the death.

The result also ensures Genoa will play another season in the top flight - a fifth win from seven games banished memories of a woeful start.

In the battle to avoid the drop, nine-man Frosinone suffered a major setback at Chievo.

Daniel Ciofani gave the promoted side the lead but red cards for Arlind Ajeti and Raman Chibsah made it easy for Antonio Floro Flores, Nicola Rigoni and Gennaro Sardo to bolster Sergio Pellissier's brace in a comprehensive 5-1 win for the hosts.

Promoted Frosinone are one point and one place beyond Palermo following the Sicilians' 2-2 draw with Atalanta.

Franco Vazquez and Atalanta's Marco Borriello exchanged first-half penalties before Gabriel Paletta gave the visitors the lead at La Favorita.

With time running out, Aljaz Struna salvaged a point for Palermo, who held out despite losing Roberto Vitiello to a late red card.

Basement boys Hellas Verona are staring at relegation after veteran forward Massimo Maccarone scored the only goal of a 1-0 Empoli victory at the Stadio Carlo Castellani.

Elsewhere, former Arsenal loanee Emiliano Viviano starred in the Sampdoria goal as the struggling Genoan club ground out a goalless draw at Sassuolo.