Chelsea boss Jose Mourinho has offered no excuses for Wednesday night's shock 2-1 Champions League loss to FC Basel.
The Blues scored on the stroke of half-time through Oscar but conceded to Mohamed Salah and Marco Streller in the second half to kick off their Group E campaign without a point.
Mourinho feels his Chelsea side were unable to produce too many scoring opportunities before eventually capitulating in the back half.
"I think they played well. I think in the first half they defended well because we had a lot of the ball but could not create many chances," he told Sky Sports.
"Oscar scored at a good time for us and then I think they scored their equaliser at our best moment of the game, after we had a couple of good opportunities, and after that we were punished defensively."
