Nottingham Forest manager Aitor Karanka was pleased with his side's attitude and commitment levels in the 1-0 win over Sheffield United.
The Reds knocked The Blades from the summit of the Sky Bet Championship thanks to Lewis Grabban's tenth goal of the season and Karanka was pleased to see his men record another impressive result in the league.
He said: "It is a big win. I feel very pleased for the players and I told them after the game that we haven't reached our peak yet and we're still improving. We've beaten the team at the top of the table who had the best form in the league and they have been working together for three years with the same manager.
"I don't remember Sheffield United having many chances, they had a few set-pieces but we defended those really well. It just shows that when everyone on the pitch is committed and together then we can achieve something nice.
"We've played three top of the table teams, Middlesbrough, Leeds and Sheffield United, and we've done very well. However, we have to remember the games against Norwich and Burton and keep making sure we improve and concentrate on our roles."
Karanka gave Claudio Yacob his first start of the season and named Panagiotis Tachtsidis and new signing Karim Ansarifard on the bench and the manager took time afterwards to explain his decisions.
He said: "Claudio was very good and very calm. When you play your first game for a long time then it is always difficult but I think he did well. We missed two key players today in Jack Colback and Danny Fox but the players who came into the side raring to go.
"I had to choose 18 players for today's squad and I chose to give an opportunity to Claudio and to put Panos on the bench because they've waited patiently for their chance.
"Karim is an important signing because he gives us another alternative option. He is a very good player, he'll be a good person in the changing room and the run he made in the last second today shows how hungry he is to succeed."