AC Milan forward Rafael Leao scored the fastest-ever goal in Serie A history on Sunday, netting after just six seconds in a 2-1 win at Sassuolo which kept his side top of the table ahead of city rivals Inter Milan.
Milan, chasing a first Serie A title since 2011, launched straight onto the attack from kick-off, with Turkish midfielder Hakan Calhanoglu setting up Leao to slot home the rapid opener.
Milan have a one-point advantage on Antonio Conte's Inter who beat Spezia 2-1, with champions Juventus four points behind the leaders in third after a 4-0 win over Parma on Saturday.
"We have four or five kick-off patterns. (Leao) was prepared," said Milan coach Stefano Pioli whose side had been held 2-2 in both their last two league games against Parma and Genoa.
"Winning this match counts for a lot psychologically."
Portuguese Leao, who usually plays on the left wing, started at centre-forward with star striker Zlatan Ibrahimovic still out with a leg muscle problem and his replacement Ante Rebic also injured.