Chelsea’s poor start to the season continued as they were beaten by Porto in the Champions League.
Andre Andre gave Porto the lead, volleying in after Asmir Begovic pushed away Yacine Brahimi’s effort.
Midfielder Willian equalised on the stroke of half-time with a superb free-kick from the edge of the area.
Maicon put the home side ahead again with a flicked header at the front post, before Diego Costa rattled the bar with a curling shot.
Chelsea’s Cesc Fabregas and Pedro both forced Spain team-mate Iker Casillas – making a record 152nd appearance in the competition – into saves early on.
But despite their early pressure, and a late penalty claim for a handball by Ivan Marcano, they came away from the Estadio do Dragao with nothing.