In hindsight…
So, both Dion Lewis and Mostert were rotational backs for their teams and surprisingly Dion Lewis played 366 snaps in the regular season while Mostert played 360. So it isn’t a huge stretch to assume that Mostert would have ended up with a similar role in Tennessee.
Again like Lewis, Mostert also had the second most RB snaps on the field for the 49ers. While Lewis was behind Derrick Henry, Mostert was behind Tevin Coleman though the gap was much wider in snaps between the RB1 and RB2 for each team (just 21 snaps difference in SF while the Titans’ backs were separated by 223 snaps).
However, you could attribute a lot of that to the three-headed rushing attack of the 49ers which saw Matt Brieda eat up 255 snaps at running back.
All of that is a long way to say that projecting Mostert’s season as the Titans backup in 2019 isn’t very hard because his role in a run-heavy offense would have been very similar to what he played in last season.
So what would the Titans numbers look like with Mostert plugged in?
Well, Mostert’s statline in 2019 was: 137 rushes, 772 yards, 8 TDs, 14 receptions, 180 yards, 2 TDs.
If Mostert does that for the Titans, then you could make a strong argument that the Titans win against the New Orleans Saints in Week 16 because Derrick Henry had to rest his hamstring in that contest and Lewis ended up with 15 carries for just 68 yards.
You could also make the case that the Titans would have won the first contest vs Indianapolis. The Colts won that game because it basically turned into a war of attrition. At that point, the Titans hadn’t made the QB switch and the Titans had a 17-12 lead before punting with 6:53 left in the 4th quarter.
That makes the Titans an 11-5 team instead of 9-7 which would have meant that the Tennessee Titans would have hosted a home playoff game, and while they still would have had to meet up with Kansas City in the AFCCG but a trade last year would have been the right call if possible.