Gonzalo Higuain scored two goals as Napoli went four points clear at the top of Serie A after coming from behind to defeat Sassuolo 3-1 at home.
The sixth-placed visitors, who pulled off a shock 1-0 win at Inter Milan in their previous outing, looked like they might register another upset after they took the lead through Diego Falcinelli’s third-minute penalty.
But Napoli equalised through Jose Callejon in the 19th minute, and Higuain then bagged all three points for the home side, taking his tally for the season to 20 league goals with strikes in the 42nd minute and stoppage time.
Earlier on Saturday, Inter could only draw 1-1 at Atalanta.
Roberto Mancini’s side fell behind in the 17th minute to an own goal, scored by Jeison Murillo, then equalised through another eight minutes later as Rafael Toloi sliced in.
Inter are a point clear of third-placed Juventus and two better off than fourth-placed Fiorentina ahead of the latter pair playing away against Udinese and AC Milan respectively on Sunday.
Elsewhere on Saturday, Torino halted a run of three successive league defeats as they beat struggling Frosinone 4-2 at the Stadio Olimpico.
After Ciro Immobile’s early penalty for the hosts was cancelled out by Paolo Sammarco’s header, a double from Andrea Belotti saw Torino go in at half-time 3-1 up.
Danilo Avelar’s own goal reduced the deficit with around 15 minutes to go, but Marco Benassi then wrapped things up eight minutes later, leaving Frosinone still four points adrift of safety in 18th. Torino are up to 11th, level on points with 12th-placed Atalanta.