Chelsea goalkeeper Petr Cech sees their Champions League trip to Steaua Bucharest as a must win.
Chelsea were shocked at home in their group opener by Basel.
Cech said: "We need to get three points back. If you lose one game it's not a drama if you win the other games. You need to get 11 points to make sure we qualify for the next round and it doesn't really matter in which order we get them.
"We have put ourselves under a bit of pressure because we gave Basle three points but in the end there are five to play and if we win them all we don't have to look around, we will be qualified."
