Slazenger seconds took charge in this game from the fifth minute when Asad Baig finished off a well-worked move with the opening goal.
Midway through the half Richard Whawell doubled the tally after terrific work by Foster in midfield.
Slazenger then made it hard for themselves by conceding a goal against the run of play with a minute of the break.
The continuous assault on the Harrogate defence, however, paid off a fourth time when Rob Stevens netted.
Slazenger entertain Bradford 2nds on Saturday 1.30pm start
