The Roosters were defeated by 52-points against a Collingwood outfit boasting several AFL stars, but McKenzie was one of few shining lights.
Assigned to Alan Didak, he collected 27 disposals at 93 per cent kicking efficiency.
"It was a good experience playing on such a good player," McKenzie said of the opportunity.
"At stoppages I'd obviously have to be aware of him (Didak) and then if we had the ball I was to work the other way and not just focus on him.
"It meant my work-rate had to be a lot higher. As soon as we had possession I would be spreading to try and get my own ball because my job wasn't over."
McKenzie kept the dangerous Didak to 22 disposals, in what was a great learning experience.
"I thought it was one of Brad's best games for the club," development coach Josh Drummond said.
"It wasn't a shutdown tag role on Didak but more trying to keep him under check and then trying to use the ball the other way.
"Didak was OK for Collingwood but he certainly didn't dominate the game."
With a reputation for his elite skills by foot, the youngster is being brought into the play more by his team-mates in season two.
It doesn't come easily though; McKenzie needs to work hard to get to the right spots.
"I've been working with Drummo on getting a lot more handball receives. They were a little higher this week, so it's nice to see the work paying off."
North's first pick in the 2011 National Draft, McKenzie says improving his versatility has been a major focus.
"It's different for sure getting to play in a variety of positions," he added.
"I'm starting to feel comfortable both forward and on the wing now. Learning the roles of each part of the ground is enjoyable.
"I'd like to be able to play anywhere on the ground if needed."
