Nottingham Forest manager Aitor Karanka was left frustrated and disappointed following this afternoon's 1-0 defeat to Millwall at The Den.
Ryan Tunnicliffe's ninth-minute strike won the contest for The Lions and Karanka was left ruing how his side started the match, particuarly from set-pieces.
He said: "It wasn't our best game. It felt like the players couldn't cope with the atmosphere of the last 24 hours but we need to recover as soon as possible because we have another important challenge on Tuesday.
"We knew from last season how difficult it would be to come here and if you don't play at 150 per cent then it is difficult to achieve something. In the second half we were better and calmer and we started to play our style but unfortunately we couldn't get the goal.
"In the first half we were playing with the ball in bad areas of the pitch where we shouldn't have been playing. We lacked a little bit of confidence and we couldn't play our best football which was disappointing."
Karanka made a switch in formation in the second half which brought more opportunities for The Reds but they were unable to find a way past a resolute Millwall outfit as the home side clung on for victory.
He said: "We had more of the ball after the substitutions and we were more offensive but we tried a bit too hard to force the chances. We switched to play three at the back and become more offensive and to create more opportunities to score goals.
"I reminded the players of last season where we conceded a couple of early goals to go 2-0 down and how you have to start the game well here. We switched off from one set-piece and then we couldn't get the game back from there."