A brace from Bradon Zibaka and a goal from Doyle Middleton gave victory over Oldham whose goal was scored from Jack Laird earler today.
Over the weekend the top two remained unchanged in the Youth Alliance with home victories.
Preston beat Stockport 5-1, Zibaka scored another brace with further goals from Jordan Scott, Will Hayhurst and Sam Osobe. County's goal came from Andy Graham.
Preston are top with 50 points from 21 matches, Burnley beat Wrexham 3-0 and are two points behind the Lilywhites but are two games in hand. Walsall are third with 47 points from 20 matches.