Tom Huddlestone believed Derby started each of the halves poorly which lead to them losing the game.
He told the club website: “Obviously its two sloppy goals, we are not accustomed to those mistakes, but we’ve been on a decent run where we are up in the top three in the league and it is not a coincidence, that is through hard work.
“We have still got 14 games left of hard work and there are still a lot of points to play for and we won’t be giving up anytime soon.”