Inter took another significant stride towards a first Serie A title since 2009-10 after a hard-fought 1-0 win over Hellas Verona at San Siro on Sunday.
The result means Antonio Conte's side are 13 points clear at the league summit, although that could be scaled back to 10 if Milan overcome Lazio on Monday.
Inter struggled for long periods against Verona, but sealed a 13th consecutive Serie A home win for just the second time in their history 14 minutes from full-time courtesy of substitute Matteo Darmian.
The wing-back powered forward, collected Achraf Hakimi's pass and slotted past Marco Silvestri from 10 yards to help his side return to winning ways after two draws in the top flight.
Inter started sluggishly and could have fallen behind shortly after the midway point of the first half.
Samir Handanovic got down well to keep out Daniel Bessa's initial effort before Federico Dimarco dragged his follow-up strike narrowly wide with the goal at his mercy.
The hosts rarely looked like scoring during a tepid opening 45 minutes and went in at the break having had just a solitary shot on target.
Lautaro Martinez was denied by Silvestri shortly after the hour as Inter continued to struggle following the restart.
Hakimi went agonisingly close to breaking the deadlock after 69 minutes but his superb 25-yard free-kick crashed against Silvestri's left-hand post.
With Martinez and Romelu Lukaku misfiring, it was left to Darmian to snatch three points, the former Manchester United man showing superb composure to slot home his third league goal of the season in the 76th minute.