Slazenger thirds eventually ran out comfortable 4-0 winners over Harrogate’s fourth string.
But they didnt achieve their goal without having to dig deep in an energy-sapping contest.
Young goalkeeper Thomas Panistone pulled off some fine saves to keep Slazenger in the game early on.
Slazenger got on top in the last 15 minutes and scored goals through Richard Tuddenham, the impressive Richard Whawell and man of the match Paul Wiper (2).
Harrogate scored their late consolation goall off a penalty flick.
On Saturday, Slazenger thirds travel to Bradford.