Fiorentina got a blast of Lazio’s impressive domestic form when the visitor won 4-0 and moved into third place in Serie A.
Ciro Immobile scored one on Monday and set up another while Sergej Milinkovic-Savic also starred with two assists in a fourth straight league victory for Lazio, which has 14 goals in those matches and conceded none.
Lazio moved three points behind Serie A leader Napoli and one below Atalanta. It is above Udinese and defending champion AC Milan on goal difference. Head-to-head is the first tiebreaker at the end of the season.
Fiorentina, in contrast, has won just one of its last eight Serie A matches and sits 13th, just four points off the bottom three.
Matías Vecino headed in a corner at the near post in the 11th minute and Mattia Zaccagni doubled the lead in the 25th with another header on a Milinkovic-Savic cross.
Immobile hit the crossbar in the second half then set up substitute Luis Alberto late on and capped a great night in stoppage time when Milinkovic-Savic ran onto a through ball and backheeled it for the Italy forward to slot home.
It has been a different story in Europe for Lazio, which beat Feyenoord in its Europa League opener but was thrashed at Midtjylland 5-1 and drew at Sturm Graz 0-0.