However impressive that was, Lam topped it last week against the Highlanders when he scored two tries, both of which illustrated his phenomenal power and awareness.
Twice he was able to score when he had three defenders on him. His second was incredible, as he found a way to barge through the tackle of Waisake Naholo and stretch his full 1.94m frame to place and slide the ball over the line.
It was a big moment because he easily came out on top of a one-on-one confrontation with a regular All Black wing.
Slightly worrying for Naholo, he looked a bit overwhelmed by Lam, who at 105kg is indeed a big man. And that's what will have grabbed the attention of the All Blacks coaches – the total package that Lam offers.
He's a natural athlete with a rugby player's instincts. Test football doesn't offer much in the way of space or time so any wing who can convert what wouldn't even be considered quarter chances, is immediately of high interest.
Having grabbed the attention with his pace and power, the next quest for Lam is to show that he has the footballing skills that he will need to play at the next level.
He's excelling on the hard grounds with a dry ball, but when the weather turns in the coming weeks and the rugby stiffens, Lam will need to show his worth under the high ball.
He'll need to prove he can defend as well as he attacks and that he can work in a back three. Again, test football brings all the challenges Super Rugby does and many more so a promising start to Lam's season doesn't in itself deliver All Blacks selection.
Even if he can keep ticking the boxes, it won't necessarily enough to make the cut because the All Blacks have so many options.
Ben Smith, Israel Dagg, Ioane and Naholo are just four of the men in the mix. There is also Jordie Barrett, Havili, Julian Savea and Matt Duffie with Nehe Milner-Skudder to return from injury as well.
There's a long way for Lam to go, but for now he's probably the most compelling story in Super Rugby because who thought he would emerge the way he has?
It's hard not to ask where has this guy has been hiding? And what's happened? Why has Lam become this try-scoring machine?
The only answer to float is that is that he's finally free of injury and able to play with the confidence that comes with having faith in his speed, power and conditioning.
Bad luck has burdened Lam in the last few years. He's had major knee injuries that have required surgery and he's also mixed his time between playing sevens and fifteens.
He's enjoyed a prolonged run of fitness and with that he's been able to get his speed back. There's no real mystery, other than seeing just how good Lam could be.
