He popped up everywhere, beat the first tackle without fail and ran a cracking support line to score the first try. But the moment that sold him to the world as an extraordinary talent came in the last minute of the first half when he managed to claw down the escaping Manu Tuilagi.
He had to make up 10 metres on the England wing and not leave himself vulnerable to being stepped. He also had to nail the tackle - not easy when the target is 112kg - and stop Tuilagi from getting the ball away.
Smith did the lot and then somehow managed to spring to his feet, counter ruck Mike Brown off the ball and launch a counter attack that led to the All Blacks winning a penalty.
It was an incredible passage that enabled the All Blacks to go into half-time 10-6 behind rather than 17-3. It was a momentum-changer - an impossible play that not only saved the day - it gave the All Blacks a depth of belief to trust their skills in the second half.
"I never really knew actually," said Smith as to when he knew he was going to get to Tuilagi. "I think I had a good angle on him. But at that point you are just doing your best to stop a big man like him ... I was lucky enough to trip him up."
There wasn't much luck involved as far as his teammates and coaches were concerned. Smith made it happen because he has become a world class performer: he was superb last year on the wing, but what may become clear by the end of this series is that he can jump to another level again at fullback.
Not that Smith was willing to venture an opinion about his level of desire to have another run at fullback.
"Fullback is a position I prefer. But then again I enjoy my time on the wing it doesn't really worry me."