According to rugby specialists, the young playmaker has shown why he deserves the starting position for the national team's fly-half against the All Blacks this weekend.
Fin Smith delivered without doubt the most impressive defensive performance we have seen by an English playmaker in several years.
His courageous approach through regularly completing defensive hits against an aggressive Fijian team was impressive.
His game management proved exceptional - he demonstrated an excellent balance of skill and composure, while executing several crucial choices during moments were not going to plan in the first half.
His capacity to calm the team strategically and make important decisions is something he has truly nailed.
From my perspective, the young fly-half is England's number one fly-half and deserves to begin against the All Blacks next week.
I believe head coach the England coach sees it that way too, since Smith has demonstrated his capability in big international games.
George Ford started last Saturday against Australia for leadership reasons, with some aspect of that choice was to provide consistency and reward his form during the visit of Argentina.
But England's performance against Fiji was a significant improvement compared to the display against Australia.
The Wallabies were defeated on Italian soil on Saturday, therefore we must avoid becoming too carried away with that win, which should have been more comprehensive considering how below par the Australians performed.
Fiji, on the other hand, were much more dangerous while offering a far tougher test.
Fin Smith is still only 23 - looking ahead 24 months, alongside Ford pushing him while providing support, I think Smith will find himself in an excellent place as a player.
The Harlequins star also has to be considered as an option at the right time and versus the right opposition.
He is developing in his career while beginning to establish himself, but he also requires liberty to demonstrate his unique attributes.
The All Blacks introduced Damian McKenzie, who scored the decisive score defeating the Scottish team, demonstrating the significance of possessing individuals capable of creating a real impact as substitutes.
That kind of presence can be the deciding factor between winning the global tournament or not.
McKenzie observes the match unfold from the bench while considering regarding ways to create a difference when he comes on.
His choices and mistake frequency have improved significantly from his initial career.
Should we develop Smith as that kind influential player, including him in the backfield could be beneficial.
However, currently I don't think Marcus is the answer at full-back, making it a role that is still up for grabs.
New Zealand are likely to punt to challenge England's backfield, so it has to be watertight.
This role that needs transforming into a real strength, both defensively and in terms offensive transitions danger.
Right now, I believe Marcus is a full-back in top-tier rugby.
I struggle to see the benefit fielding him in that position.
I want possession in his hands frequently, but I believe this should occur in the front line, particularly in the final 20 minutes.
There are obviously a lot of parallels comparing Ford with Smith.
Smith possesses the ability to make the correct decisions under pressure - his natural reactions represent traits you can really coach.
I recall when he got the ball during one phase just inside his own half and it looked that opportunity existed on if they spread play.
However during these milliseconds he thought they needed reversing the opposition since England were leading points-wise, so he kicked to pressure them back applying pressure.
This represents the type of playmaking that wins championships and wins World Cups.
He additionally possesses that calmness during intensity directing the players around him, and the understanding that he doesn't constantly serve as primary option.
I want to see him given the chance to show this at elite level next week, similar to the veteran accomplish, especially at domestic matches week in consistently.
In Argentina, 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 matches.
I think England possesses two fly-halves capable of performing the job, but with Fin's defence combined with everything else, it makes him the more complete all-round performer.
It also means you don't have to modify the defensive structure when you have an assertive player in the fly-half position, instead of an individual being somewhat reserved.
You could also present compelling arguments favoring Ford beginning and Fin Smith entering from the bench.
There are so many factors that go on privately, however the coaches decide to go, this will present New Zealand problems.
This hasn't consistently represented the narrative against the All Blacks, when attention was simply on selecting the optimal individual.
On this occasion, either playmaker selected can put the All Blacks significantly.
Smith's capacity selecting the right kick while delivering for a potential territorial gains might relieve pressure away from the national team.
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