Stefano Pioli's side stayed 4 points in the back of city opponents and league leaders Inter Milan, who have been 1-zero winners over Torino, heading into the wintry weather damage thanks to Franck Kessie's first-1/2 brace and similarly desires from Alessandro Florenzi and Theo Hernandez.
The win allowed Milan to reclaim second spot from Napoli after their debatable loss at the hands of Luciano Spalletti's team on the weekend and leaves the seven-time European champions as the precept pretenders to Inter's Serie A crown.
They are 3 factors in advance of third-positioned Napoli who, nevertheless with the aid of a bunch of absences, were sunk by a Juan Jesus personal purpose within the 37th minute which ended Spezia's run of six suits without a win and movements them 5 factors far from the relegation area.
A exceptional team display in Tuscany meanwhile blew away some of the darkish clouds soaring over Milan following their humiliating flop inside the Champions League and just wins of their previous six league fits which allowed red-warm Inter to take the initiative within the name race.
Kessie opened the scoring with a primary-time strike from Olivier Giroud's lay-off in the 12th minute but it seemed like it'd be any other uncomfortable night time for Milan when Nedim Bajrami levelled handiest six mins later.
However Kessie, who was denied a final-gasp equaliser in opposition to Napoli with the aid of VAR on Sunday, put the away aspect returned inside the lead rapidly before the wreck with a low drive from a decent attitude which fizzed among Guglielmo Vicario's legs.
Two brief-fireplace strikes midway through the second ensured the points for Milan, with Florenzi scoring his first Rossoneri intention from a 62nd-minute free-kick before Hernandez lashed domestic the fourth from close variety.
Andrea Pinamonti's penalty six mins shape the quit made no difference to the end result.
