Gainsborough Trinity manager Steve Housham believes their 2-0 Blue Square Bet North victory over Altrincham was their strongest performance this term.
Paul Connor missed an early penalty but Leon Mettam put Trinity ahead in the first half before setting up the second for Ryan Williams after the break.
Housham told BBC Lincolnshire: "That's probably the best we've played.
"We got at them and started with a good tempo. We didn't want the first half to end because we were doing so well."
Trinity dominated from the start and soon had the chance to go ahead when Mettam was fouled in the penalty area, only for Connor's spot-kick to be saved by Joe Collister.
But they went ahead on 28 minutes when Mettam latched onto a long ball to fire home and doubled their lead five minutes after the break, as Mettam turned provider for Williams.
At the other end, Trinity's defence excelled as they snuffed out the goal threat of the division's top-scoring side.
"It was a poor penalty and he's admitted it," said Housham. "But he turned things round and was superb, he worked his socks off and deserved a goal.
"Metts [Leon Mettam] deserved his goal because he worked hard as well. I've challenged him to make it hard for me, the tinker man, to not drop him.
"We needed that second goal and he set up Ryan Williams, who finished it well, and overall I'm delighted today."
The result sees Gainsborough remain fifth in the table, but they are now only one point behind second-placed Guiseley.