Kansas City Chiefs quarterback Patrick Mahomes is coming off of an inhuman 2018 campaign in which he threw for 5,097 yards, 50 touchdowns, and 12 interceptions while completing 66 percent of his passes and posting a passer rating of 113.8.

Obviously, the natural reaction is to think that if Mahomes did that in his first season as a starter, how much better will he get in his second year?

Of course, things don't always work that way, which is why it is going to be very difficult for Mahomes to repeat his MVP season from 2018.

First and foremost, those types of stat lines come along once in a blue moon. Sure, it can happen here and there, especially with a signal-caller with as big of an arm as Mahomes, but the fact of the matter is that they are rare and require a whole lot of things working perfectly together in unison.

Mahomes can have an extraordinary season in 2019, and he still might not approach 50 touchdown passes. As a matter of fact, it's entirely possible that Mahomes never does that again in his NFL career.

Patrick Mahomes, Chiefs

The most important factor in all of this, however, is Mahomes' supporting cast.

While Mahomes was absolutely the biggest component to the Chiefs' explosive offense this past season, we have to remember that he had a ton of weapons that included Tyreek Hill, Kareem Hunt, Travis Kelce, and Sammy Watkins.

Now, half of those weapons are gone, as Hunt was released by Kansas City late last November as a result of a domestic violence incident, and Hill may very well be sidelined for all of 2019 (if not eventually cut) due to child abuse allegations.

So, basically, Mahomes is down two pivotal weapons, and now, Watkins is his No. 1 receiver and Kelce is really his only reliable option in the passing game. It's not like the Chiefs have a true replacement for Hunt in the backfield, either.

Taking into account that Hill and Hunt combined to catch 19 of Mahomes' 50 touchdown passes in 2018, not having either of them this coming season will likely end up being a significant problem.

Patrick Mahomes, Chiefs

Hill is one of the most unique and versatile players in the league, and Hunt seemed primed to permanently stamp his name among the NFL's best running backs before the controversy ensued.

This is not to say that Mahomes can't have a great season in 2019, because he can. He is a terrific quarterback, after all, and the offensive line is good enough to provide him with ample time to throw the football.

That being said, it would have been unrealistic to expect Mahomes to replicate his 2018 campaign even if Hill and Hunt were still on the roster. Now, with both players gone, it is going to be nearly impossible for Mahomes to do it.

To be fair, Watkins has been a very good receiver in the past and rookie Mecole Hardman certainly has potential, so the Chiefs may still end up having a deep and dynamic offense, but it won't be what it was in 2018, and Mahomes' numbers will dip as a result.