A 20 point haul from five-eighth Jamie Humphreys has seen the Blacktown Workers Sea Eagles record a convincing 36-16 win over the Newcastle Knights in the NSW Cup.

Humphreys crossed for two tries and kicked six goals in the big round 14 win at the Newcastle Permanent Centre of Excellence on Sunday.

The match saw exciting young SG Ball half Tylor Bunting make his NSW Cup debut in a fine reward after the skillful half spent the pre-season training with the NRL squad.

Four first half tries to the Sea Eagles saw them take a 24-6 lead into the break with the Knights scoring their lone try right on half-time.

Humphreys opened the scoring in the fifth minute after he charged onto a pass from hooker Jake Simpkin to crash over for his own converted try for a 6-0 lead.

Five minutes later, Simpkin showed his NRL experience when he stepped and weaved his way from dummy half to score for a 12-0 lead after 11 minutes.

Prop Aitasi James then crashed over under the posts off a Simpkin pass for an 18-0 lead after as many minutes.

Ten minutes later, full-back Clayton Faulalo crossed for a 24-0 lead after seeing the ball fall into his arms from a fumble off a Humphreys crossfield kick.

The Knights then scored a length of the field try inside the final minute of the first half through winger Laitia Moceidreke after he started the play inside their own in-goal before backing up two team-mates to score to make it 24-6 at the break.