Inter Milan stretched their lead at the top of Serie A to 15 points as first-half goals from Kristjan Asllani and Alexis Sanchez secured a 2-1 home win against Genoa on Monday.

Inter moved further ahead on 72 points after second-placed Juventus lost 2-1 at Napoli on Sunday. Genoa are 12th with 33.

- Stream on ESPN+: LaLiga, Bundesliga, more (U.S.)

Inter's Simone Inzaghi had good reason to celebrate his 300th Serie A match as a manager, with his side winning all 12 of their matches so far this year and matching the points total they achieved in the whole of last season.

Genoa put up a fight from the start and came close to scoring midway through the first half with a header from Mateo Retegui that Inter goalkeeper Yann Sommer saved impressively.

But Asllani broke the deadlock on the half-hour after receiving Sanchez's through ball and firing into the roof of the net from inside the box. Eight minutes later Sanchez doubled the lead with a penalty after Morten Frendrup fouled Nicolò Barella.

Genoa got back into the match nine minutes after the break when Johan Vásquez volleyed home a clearance from Inter defender Stefan De Vrij.

The visitors then thought they had equalised when substitute Vitinha netted but there was an offside in the build-up.