Cech's performance in goal was the one bright aspect of a second defeat to Basle.
"We could've made it clear," Cech told Chelsea TV. "(But) we've made it a bit more complicated for ourselves. We qualified, that's the main thing. One more game, we want to make sure we win the game and be top.
"We didn't play the way we wanted, we didn't get the result we wanted - but at the same time we got the result we wanted.
"We wanted to come home from Basle with the qualification in our pocket; we are going home with the qualification, but we want to finish first."
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