Chelsea goalkeeper Thibaut Courtois admits Liverpool shocked them in the first-half.

The visitors outclassed Chelsea throughout the opening 45 minutes, reaching the interval with a 2-0 advantage through goals from Dejan Lovren and Jordan Henderson.

Diego Costa struck just after the hour to raise Stamford Bridge's hopes but Chelsea were unable to find their way past a determined Liverpool backline.

“We didn't start well. First half we didn't have the duels, we didn't have the second ball, everything was for them," Courtois said. “They pressured us and we couldn't cope with it. It was very hard and we gave two goals away.

“The second half was a bit better, we scored and had some pressure but I don't think we had a big chance.

“The first goal was a set-piece that they took quick, everybody ran to the first ball and they ran to the second ball, put a good cross in and it was a good goal. Everyone was a bit shocked, we didn't start well and then they scored the second when we didn't defend well.

“We tried to come out but when we tried to get better they scored the second."