Gateshead manager Gary Mills feels Saturday's 2-0 home defeat by Woking was his side's worst performance since he moved to the club in September.
The result gave Woking their first away win of 2014 and brought Gateshead's nine-game unbeaten run to an end.
Mills told BBC Newcastle: "There's no excuse for the way we played.
"It was probably the poorest performance since I've been at the club. We've set a good standard this season but we fell well below that."
Gateshead have been in impressive form under Mills' guidance, now having losing just three of their last 20 league games.
"We didn't deserve anything," Mills continued. "All credit to Woking because they were better than us.
"They won a lot more second balls. We were poor in keeping the ball and, apart from one chance, I don't think we looked like scoring.
"We've lost a football match but it's not the end of the world. We've played superbly well in recent weeks and we'll get back to that."
The Heed were languishing in 19th place in the league when the former York City boss took charge at the International Stadium.
They now lie fifth in the Conference Premier, occupying a play-off place, and Mills remains upbeat about his team's push for promotion.
He said: "We've been superb together, myself, the coaching staff and the players, to get where we have. I'm hoping one game is not going to spoil the remainder of the season.
"We have to take it on the chin, keep smiling and win the next game."
Gatehead next face a trip to third-placed Alfreton next Saturday, with the two teams separated by six points.
"They're a good side who have done well this season," the 52-year-old added. "We've got to make sure that we go there and get a result and stay with them."