According to rugby specialists, the young playmaker has shown why he deserves the first-choice spot for the national team's number ten versus the All Blacks this weekend.
The Northampton Saints star produced arguably the most impressive defensive performance observed from an England playmaker in several years.
His courageous approach by consistently making his tackles against an aggressive Fijian team was impressive.
His tactical control proved exceptional - he demonstrated a perfect blend of finesse and composure, while executing some strong decisions when things were not going as expected in the first half.
His ability to settle the team tactically and make important decisions is something he has really mastered.
From my perspective, the young fly-half represents England's primary playmaker and deserves to start versus New Zealand next week.
I think the manager the England coach sees it similarly as well, because Fin has demonstrated he can perform in big Test matches.
The experienced fly-half began the previous weekend against Australia for leadership considerations, with some aspect of that decision was to provide consistency and reward his performance during the visit to South America.
However, the national team's showing against Fiji was a significant step up from the performance versus the Wallabies.
Australia were defeated in Italy last weekend, therefore we must avoid becoming too carried away with that win, that could have been by a larger margin considering how below par the Australians were.
Fiji, on the other hand, proved significantly threatening and presented a far tougher challenge.
Fin Smith remains just twenty-three - looking ahead 24 months, alongside Ford challenging him while providing backup, I believe Smith will find himself in a very strong position as a player.
The Harlequins star must also be considered as a possibility when appropriate and versus suitable opponents.
He's progressing as a player and is starting to establish himself, but he also requires liberty to demonstrate his distinctive attributes.
New Zealand introduced Damian McKenzie, who registered the match-winning score to beat Scotland, demonstrating the significance of possessing players capable of creating a real impact from the bench.
That kind of presence can be the difference between winning a World Cup from failure.
McKenzie watches the game develop from the bench while considering about how to create a difference when he comes on.
His decision-making and mistake frequency have improved significantly since his early career.
Should we develop Marcus to be such type influential performer, including him in the backfield could be beneficial.
Nonetheless, currently I don't think he is the answer at full-back, so that is a role that is still up for grabs.
The All Blacks will kick to challenge England's backfield, so it has to be watertight.
It is a position requiring transforming into a real strength, both defensively and in terms offensive transitions threat.
Right now, I believe Marcus is a full-back at the highest level.
I struggle to identify the benefit of playing him there.
I prefer possession under his control as much as possible, though I think this should occur in the front line, particularly during the last 20 minutes.
Clearly there exist numerous similarities between Ford with Smith.
Smith possesses the ability to make the correct choices during tense moments - his instincts represent traits you can really taught.
I remember when he got possession at one stage within his own half and it looked like it could be should they spread play.
However during these milliseconds he calculated they needed to turn the opposition since England were leading points-wise, therefore he punted it to pin them back and turn pressure.
That's the sort of fly-half play that wins titles and wins global tournaments.
He additionally possesses that calmness during intensity to organise teammates around him, while recognizing that he doesn't always need as primary receiver.
I hope to witness him given the opportunity demonstrating that at the highest standards soon, just as we have seen George Ford do, especially at club level week in and week out.
During the South American tour, the experienced fly-half also stood up during challenging circumstances, previously one might suggest there have been times he has not quite delivered during extremely tense games.
I think England possesses two fly-halves capable of performing the role, though Smith's defensive work combined with additional qualities, establishes him as the better-rounded versatile player.
It also means there's no need to modify your defensive system when you have someone aggressive in the fly-half position, instead of an individual being a little more passive.
One might make a strong case favoring Ford beginning and Fin Smith coming off substitution.
Numerous considerations that go on behind closed doors, but whichever way the coaches decide to go, this will present the opponents problems.
This hasn't consistently represented the situation against the All Blacks, when attention was simply on picking the optimal individual.
This time, either playmaker selected will pressure the All Blacks significantly.
Fin's ability selecting optimal kicks while delivering for a potential 50-20 might relieve all the stress away from England.
A software engineer and tech writer passionate about AI, cybersecurity, and emerging technologies, with over a decade of industry experience.