Matteo Darmian was the unlikely hero as Inter Milan beat Cagliari to extend their Serie A lead to 11 points.
The former Manchester United full-back tapped home Achraf Hakimi's cross with 14 minutes remaining to seal an 11th successive victory.
Strugglers Cagliari had frustrated Inter who saw defender Stefan de Vrij head against the bar after 68 minutes.
Antonio Conte's side now require 16 points from eight games to win their first league title since 2009-10.
After second-placed AC Milan defeated Parma 3-1 on Saturday, forward Romelu Lukaku had a rare off day as Inter struggled to finish their numerous chances.
But Parma loanee Darmian pounced to leave relegation-threatened Cagliari five points from safety in 18th.
Source: BBC