Dries Mertens scored a hat-trick as Napoli trounced Empoli 5-1 to narrow the gap to Serie A leaders Juventus to three points.
A rapid ninth-minute counter-attack saw Kalidou Koulibaly provide the final pass that Lorenzo Insigne collected and clipped beyond goalkeeper Ivan Provedel at Stadio San Paolo.
Empoli had a Luca Antonelli effort ruled out for offside before, in the 38th minute, Mertens dribbled into the box and unleashed an angled drive that stunned Provedel.
Francesco Caputo briefly made it a contest again when beating the offside trap and Orestis Karnezis to halve the deficit, but the irrepressible Mertens would reestablish Napoli’s two-goal lead.
This time he did not need to enter the penalty area, instead lofting a first-time strike over Provedel.
Empoli’s heads dropped and substitute Arkadiusz Milik added a fourth at the end of another fast break before Mertens claimed the match ball thanks to an assist from Insigne.
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