Nigel Worthington watched his York City side’s troubles mount as they fell to a 2-0 home defeat to Wimbledon.
Michael Smith’s brace secured all three points for the visitors.
“I think we limited them,” said Dons manager Neal Ardley. “I think they had one chance late on from close range in the 90th minute and that’s how solid we were, so absolutely delighted with an ugly, hard-working win.”
The Dons took the lead when Smith beat George Taft to pick up Andy Frampton’s long ball and lob goalkeeper Michael Ingham.
York pushed for an equaliser, Ryan Jarvis going close, but his attempt was blocked on the line by Barry Fuller.
Smith grabbed his second with the simplest of finishes, tapping in substitute Chris Arthur’s pass across the face of goal.
Ardley added: ”We’ve had a couple of home games on the trot, and won them and kept our 100% record at home, but we wanted to get that classic away performance in and we knew it was going to be a tough place to come, a long journey.
“We’re delighted and it just keeps that bit of momentum going. Today we knew we’d get our chances but it wasn’t spectacular, it was solid, it was hard-working.