Chelsea goalkeeper Petr Cech admits all the pressure is on them ahead of today's FA Cup final against Portsmouth.
Chelsea are overwhelming favourites to complete the Double.
Cech will not contemplate an upset and told The Sun: "We can't afford to let that happen.
"Believe me, we are under incredible pressure to win this final. For us it's not just about being a part of the great day that is the FA Cup final.
"We want to win. We are the holders and we are desperate to defend our trophy. That is the challenge, that is the expectation at a big club like Chelsea.
"We must be hungry for more success. I know I am. I have won the league now three times, I have won the FA Cup twice and hopefully this will be the third time.
"But I have never done the Double. And that's what makes this final so special for me, for all of us. It's our chance to make history."