Aron Gunnarsson’s second-half strike was the difference and Warburton has been left wondering what might have been had The Reds shown more quality in the final third.
He said: “We were good in long patches against a good team and we stood up to a physical test. We had to defend our goal, as we did, and we created chances. It is the fine margins of getting the rewards and we have to do that. There was a lot of quality play and it is frustrating for the players that we didn’t get something out of today’s game.
“We were strong, resilient and stood up and did that side of it well and we created chances. But it is about goals and goals change games. Danny Fox had great movement for the header, Vellios hit the bar and I thought we did enough to get a point.
“It is the final bit of quality. The work rate was tremendous and the play in the build-up was tremendous. There is no lack of desire or commitment in any shape or form, but it is just that little bit of quality that you need in and around the box which didn’t fall our way today.
“They are fine margins. Set pieces you work hard on and they are an important part of the game. Danny Fox timed his run, it was a good delivery, you also saw Muzzy’s shot, Jamie, Ben Brereton and Britt; there were a lot of efforts but we just need to turn them into goals.
“I thought the defence stood up to the long balls and throw ins, we dealt with it and defended the goal with a passion. It is so frustrating to be beaten by a 25-yard screamer, there is nothing Jordan can do. It is very frustrating.
“They are a hard team to break down but we had bodies forward. It is frustrating and it is the random nature of football; sometimes it falls your way but it hasn’t. It is now Wolves, Blackburn and here where we should have got points out of the game and we haven’t.”
Forest now have three big games to finish the season and Warburton believes if his side show the same level of performance in those matches, they should steer clear of relegation.
He said: “We have three huge games coming up but if the players play like that and show that quality and commitment, we will be okay.
“We have to recognise where we are. It is still in our hands and if we play like that in the last three games we should be okay.
“They are all big games. Huddersfield was a huge game against a side chasing promotion and Reading will be the same. We have to focus on us and the effort and desire was there for all to see today.”