Altrincham may still lead the Evo-Stik League Premier table by six points, but they have now failed to win three of their last six games after going down to a 3-2 defeat to Workington AFC at Moss Lane on Tuesday night.
The Reds travelled down to Cheshire having suffered a home defeat to relegation-threatened Stalybridge Celtis last weekend – their sixth successive league defeat.
But they made a great start with two goals in 5 minutes midway through the first half from Scott Allison.
Altrincham fought back in the second half and got back to 2-2, thanks to a brace from Tom Peers in the 61st and 69th minutes.
But Workington debutant Steven Rigg netted the winner in the 80th minute when a clearance fell to him and he scored with a low shot.
Altrincham`s closest rivals, Warrington Town, were held to a 0-0 draw at Marston Road by mid-table Stafford Rangers, while third-placed Ashton United suffered a 2-1 Hurst Cross defeat by inconsistent Coalville Town.
Tom McGlinchey gave the Ravens the lead on the half-hour mark.
Sam Sheridan equalised 12 minutes into the second half, but it was the visitors who stole the points, courtesy of Nathan Watson 20 minutes from time.
Grantham Town would have moved into the top five with a win at The Meres against mid-table Nantwich Town but had to make do with just a point from another goalless encounter.
Marine AFC enjoyed a good 3-0 win at the Marine Travel Arena against Lancaster City and now look relatively safe.
Adam Hughes` goal in the 15th minute separated the sides at half-time.
Danny Mitchley added a second for the hosts 2 minutes after the restart and James Murray made sure with a third with 9 minutes remaining.
Buxton are level on points with the Mariners after sharing a 1-1 Silverlands draw with out-of-form Stourbridge.
Leon Broadhurst broke the deadlock to give the Glassboys the lead 5 minutes into the second half.
But Liam Hardy`s penalty reply came within 4 minutes.