Porto defeat Chelsea as Mourinho's men continue poor form (Match highlights)
Chelsea's poor start to the season continues as they are beaten 2-1 by Porto in the UEFA 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.