Canberra Raiders under-20s skipper Mitch Cornish believes his side's greatest obstacle may be complacency after its impressive 62-30 win over Parramatta at Canberra Stadium yesterday.

The Eels drew level with the competition leaders at 24-all early in the second half through a try to Israel Folau's younger brother John.

But with halfback Cornish running riot and centre Edrick Lee starring again with four tries, the Raiders piled on seven second-half tries.

Afterwards Cornish admitted Canberra may have been guilty of taking the 11th-placed Eels too lightly in the first half.

''At half-time we came in with our heads down even though we were up [24-20], they were killing us with their offloads,'' Cornish said.

''We spoke about that it's where we're going to hurt ourselves, thinking we're just going to turn up and win. We tried to get that out of our game as much as possible, but it's hard when you're winning every week. But we came out in the second half and did a great job.''

With his daunting combination of size, strength and skill, Lee continued to press his claims for a first-grade berth.

More stellar performances like yesterday may well force the hand of Raiders NRL coach David Furner.

''I'd definitely hate to be the opposing centre standing in his way trying to stop him,'' Cornish said.

Cornish scored 22 points himself through a try and nine goals, and the club is reportedly in negotiations with his management to extend his contract, which expires at the end of 2013.

''I'd love to stay at the club, we'll see what happens,'' Cornish said.

AT A GLANCE

Toyota Cup round 10: CANBERRA RAIDERS 62 (Edrick Lee 4, Mitch Cronin 2, Matthew Allwood 2, Jordan Worboys, Brad Smith, Jonathon Reuben tries; Cornish 9 goals) bt PARRAMATTA EELS 30 (John Folau, Luke Vescio, Robbie Kamoto, Connor Broadhurst, Semi, Radradra, Pauli Pauli tries; Mitchell Brasington 3 goals) at Canberra Stadium yesterday.