Liverpool swept aside Porto in the Estadio do Dragao for the third-successive time as a 5-1 victory put them two points clear in their Champions League group.
Jurgen Klopp’s side have scored 14 times in their last three visits and his deadly duo of Mohamed Salah and Sadio Mane have been responsible for nine of them.
It is a record of which former Liverpool striker Roger Hunt, whose death was announced earlier in the day, would have approved.
Jota hit the side netting before Klopp afforded himself the luxury of resting Salah, Mane and Milner for Sunday’s City game.
Mehdi Taremi took advantage 15 minutes from time with a diving header but there was still time for more Costa eccentrics as he raced out of his goal for a ball he was never going to get.
Firmino rolled the ball past him from 30 yards and – despite the goalkeeper’s despairing run and dive – the shot crept over the line before benefitting from a deflected Jones shot to slot home a second.