Cristiano Ronaldo got Alex Meret sent off and set up a free-kick for Miralem Pjanic—who was also eventually be sent off—to score and Lorenzo Insigne missed the game-tying penalty as Napoli lost to Juventus.
Two red cards and a late penalty miss contributed to a dramatic match at the Stadio San Paolo on Sunday as Juventus beat second-place Napoli 2-1 to continue its seemingly unstoppable march toward a record-extending eighth successive Serie A title.
''We have a 16-point advantage and a superior head-to-head record,'' Juventus coach Massimiliano Allegri said. ''It's undoubtedly a significant advantage, but we still have to wait to be mathematically certain. I think we still need five or six victories to win the title.''
But Miralem Pjanic—scorer of the first goal—was also dismissed at the start of the second half and Jose Callejon pulled one back for Napoli. Lorenzo Insigne then hit the post for the home team with a penalty six minutes from time.
The match had turned in the 28th minute when Ronaldo intercepted Kevin Malcuit's poor back pass and went down on the edge of the area as Meret came rushing out to challenge.
Although it was debatable whether Meret touched Ronaldo, referee Gianluca Rocchi showed a straight red card to the Napoli goalkeeper for his recklessness as it denied a clear scoring opportunity.
''It's a very controversial incident,'' Napoli coach Carlo Ancelotti said. ''Certainly, he didn't touch him, but it could be a thing of intent. It's not so clear this direct red, it's not a given that Cristiano would have got to the ball.
''The red seems over the top to me. There's the VAR and the referee should have looked at it again—why else do we have it?''
Pjanic curled the resulting free-kick into the net and Emre Can doubled Juve's lead 11 minutes later with a close-range header.
Napoli was given a way back into the match when Pjanic was shown a second yellow card for handling two minutes into the second half.
The hosts reduced the deficit in the 61st as Callejon got ahead of the Juventus defenders to tap in Insigne's cross.
Napoli laid siege to the Juventus goal and thought it had got its rewards when it was awarded a penalty for an Alex Sandro handball, but Insigne's effort rebounded off the post.