Manchester: Chelsea manager Antonio Conte lauded Diego Costa after the striker made a decisive contribution — and kept his cool — in the Premier League leaders’ tempestuous 3-1 win at Manchester City.

Costa cancelled out Gary Cahill’s own goal opener and set up Willian for Chelsea’s second goal as Conte’s men came from behind on Saturday to record an eighth successive victory.

“Diego is showing he is using his passion in the right way and I’m very happy about that,” said Conte, whose team put four points between themselves and Pep Guardiola’s City.

Costa has frequently fallen foul of England’s football authorities since joining Chelsea from Atletico Madrid in 2014.

His form slumped last season as Chelsea’s title defence disintegrated, but he is the Premier League’s joint-top scorer with 11 goals and believes he has benefited from keeping his head.

“I want to be on the pitch and I want to be cool,” Costa said.

The main talking points in an absorbing game occurred in added time, when Argentine striker Aguero was red-carded for launching himself into an appalling knee-high challenge on David Luiz.

Guardiola, implausibly, said the foul was not intentional. He will be without Aguero for four games, while Brazilian midfielder Fernandinho faces a three-game ban after grabbing Fabregas by the throat and shoving him over an advertising hoarding.

Guardiola said Fernandinho had been trying to “defend his teammate” and drew a confusing parallel with Nolito’s dismissal for headbutting Bournemouth’s Adam Smith in September.

“It’s a pity it finished like this, but it was the way the referee decided,” said Guardiola, who tasted defeat at the Etihad Stadium for the first time.

“I don’t like that. I apologise for what happened.”

City’s fans were incensed by referee Anthony Taylor, who elected not to punish Luiz for impeding Aguero when he was clean through on goal and also turned down three penalty appeals by the hosts.

But Guardiola said: “We didn’t win because we missed a lot of chances. Not for the referee.”

He added: “I am so proud of my team and how we played.

“I came here to try to play the way we played today. We created more chances than against Burnley and Crystal Palace, when we won.

“In the boxes, we are not strong enough. But I have no regrets.”