Hereford United 1-0 Cambridge United
Cambridge saw their lead at the top of the Conference Premier cut to one point as they suffered only a second league defeat of the season at Hereford.
Michael Rankine scored the only goal, capitalising on a mistake in the U's defence to fire left-footed past keeper Chris Maxwell and in off the post.
Cambridge had chances to level but Josh Gillies curled a shot wide and Adam Cunnington fired into the side netting.
Second-placed Luton cut the U's lead at the top with a 4-2 win over Gateshead.