Slazenger thirds had their toughest game of the season to date, eventually being squeezed out by Sheffield sixths 2-3.
Richard Whawell slid by a couple of defenders to equalise for Slazenger and man of the match Craig Lee was on hand to finish off cooly for the second.
But Slazenger took control and eventually their midfield superiority paid off with two late match seizing goals.
On Saturday, Slazenger travel to Rotherham fourths, push-back 2pm.
