Theo Hernandez’s superb goal sealed AC Milan’s victory over Atalanta to put them on the brink of their first Serie A title for 11 years.
The French left-back’s solo run and finish sparked wild celebrations at a raucous San Siro, with Rafael Leao having already scored for the hosts.
Stefano Pioli’s side are now unbeaten in their last 15 league matches.
Their closest rivals Inter are five points behind and face Cagliari in their penultimate game later on Sunday.
A tense affair had seen Milan initially struggle to break down a well organised Atalanta side chasing a European place.
However, Junior Messias’ second-half introduction as a substitute reaped immediate dividends.
The Brazilian’s second touch sent Leao through on goal and the Portugal forward drove an effort through the legs of visiting goalkeeper Juan Musso to put Milan in front.
While there were several anxious moments for the hosts in defence, Hernandez’s sublime goal settled any nerves and transferred any pressure firmly across to city rivals and reigning champions Inter.
Should the title race go to the final day on 22 May, Milan can still win the Scudetto with a draw at Sassuolo with Inter hosting Sampdoria.