Slazenger thirds overcame a robust West Yorkshire Police squad 5-3.
Police scored two early goals but Slazenger arrested the slide and half-back Anwar Al-Kahili and Tony Sidwell started to cause the home side problems.
Short corners were particularly effective and Slazenger went on to score all their five goals without reply until the last ten minutes.
Scorers were Micky Turner, Simon Parker (2), Gavin Kaye, and Martin Lofthouse.
