Derby County manager Gary Rowett has said his side made too many mistakes at Craven Cottage, as his side lost 2-0 on the night, and 2-1 on aggregate.
The former Birmingham and Burton boss believes that the home side handled the occasion better than the Rams, and the away side lacked composure in the final third.
Second half goals from winger Ryan Sessegnon and defender Denis Odoi were enough for the Cottagers to secure a place at Wembley in the Play-Off Final.
The victory sets up a final tie against either Aston Villa or Middlesbrough who will play their second leg tonight, with Villa going in to the game with a one goal advantage.
Speaking to Sky Sports (via the Derby Telegraph), Rowett said: “Having looked at the goals, they were two very poor goals for us to give away.
“We didn’t make those mistakes in the first leg. Our composure let us down tonight, when we had a chance to pass the ball we didn’t pass it well enough.”
The Rams have been in the Play-Offs three times in the last five years, failing in each attempt.
This time, Rowett believes that mistakes proved to be costly in defeat at Craven Cottage.
“We made far too many mistakes on the ball – we looked a little bit edgy if I am honest,” he said.
“Fulham handled the leg much better than us, in terms of their composure and ability to move the ball round and be patient.”
Derby will now regroup during the summer in the hope of mounting another promotion push next campaign.