The Northern Knights have one hand on the interpro T20 Trophy after their spinners demolished a brittle Warriors batting line-up at Sydney Parade.

Lisburn's Matthew Humphreys took the honours, with the left-armer taking 5 for 13, and fellow southpaw Theo van Woerkom claiming 3 for 27 as the NW made just 78.

Jared Wilson (27) and Graham Hume (17) were the only players from Boyd Rankin's side to reach double figures.

The Warriors bowlers made life difficult for the Knights with Graham Hume (2-9) and Craig Young (2-20) bowling with real fire and venom on a difficult pitch in helpful conditions.

At 38 for 4 there were some nerves in the NCU camp, but stand-in skipper Neil Rock hit 5 fours and a six in an unbeaten 29 to seal the bonus point five wicket win with seven overs to spare.

The Knights will be crowned champions if they win one of their two remaining games or if the Warriors fail to win both their matches.