Cristiano Ronaldo's controversial last-gasp penalty sinks 10-man Genoa. Ronaldo controversially won and then converted a stoppage-time penalty, seconds after having a goal chalked off for offside, as Juventus finally broke down 10-man Genoa to win 2-1 and go back to the top of Serie A on Wednesday.

Ronaldo went down under a challenge from Antonio Sanabria and, although their was minimal contact if any at all, the referee pointed to the spot and the VAR officials confirmed the decision with a silent check.

The Portuguese forward then fired in the penalty in the sixth minute of stoppage time.

It was rough justice on 17th-placed Genoa who played with 10 men from the 51st minute when Francesco Cassata was harshly given a second yellow card for tugging Paulo Dybala's shirt.

Juventus, still unbeaten in all competitions under coach Maurizio Sarri, have 26 points from 10 games, one ahead of Inter Milan who beat Brescia 2-1 on Tuesday.

"We suffered a lot but we were the rightful winners. We created so many chances and deserved this win," said Ronaldo.

"We got a bit anxious as the game we went because we needed the win but we kept on trying until the end."

Atalanta twice fought back from a goal behind to hold Napoli to a 2-2 draw at the San Paolo, where a fiery ending resulted in red cards for Carlo Ancelotti and his assistant.

Josip Ilicic struck a contentious 86th-minute equalizer that was upheld following a lengthy VAR review, as Napoli appealed for a penalty.

Napoli forward Fernando Llorente tumbled to the ground after jostling with Simon Kjaer in the Atalanta area before the visitors countered and scored through Ilicic.

A five-minute interruption followed before the referee awarded the goal without reviewing the incident on the touchline monitor.

"I consider what happened an attack on my professionalism, my players and my club," Ancelotti said.

Napoli president Aurelio De Laurentiis was livid with the officiating.

"If there is VAR it's pointless creating eight minutes of additional time because all that happens is pushing and shouting," he told Sky Sport Italia.

"And what is this buffoonery from the referee who kicks out a gentleman like Ancelotti?

"We're fed up. Without us the referees would be peeling potatoes. We're tired of paying for this standard of refereeing."

(With input from Reuters and AFP)