Manager Simon Grayson admitted Leeds United didn't do enough in the attacking third to score in Saturday's play-off defeat to Millwall.
The West Yorkshire club must overcome a 1-0 deficit in Thursday's semi-final second leg at Elland Road after the narrow defeat at The Den.
"I thought it was a good performance without possession of the ball," said Grayson.
"We worked hard, looked organised and were difficult to break down.
"With the ball, we possibly could have played a bit better, but it's a play-off semi-final, it's hurly burly with a hostile atmosphere and you're going to be on the back foot at times, but I thought we defended ever so well.
"But in the attacking side we were probably a bit short of what we are capable of doing.
"I said that if we we're still in the tie after the game today then we can turn it round and we still are in the tie.
"We've got 90 minutes to turn a 1-0 deficit into a positive for us and we've got players that are capable of doing that."