We learn new information every week as the ever-changing Fantasy landscape at the running back position reshapes itself. There are many specific usage stats that impact a running back's Fantasy projection, and outside of a few players, we see those underlying backfield usage metrics fluctuate throughout the course of a season. And the first few weeks of the season present us with a flood of new data to make sense of.

Each week, SportsLine's Fantasy expert Jacob Gibbs will examine all of this new information and provide a data-driven deep-dive into Sunday's games to offer a better understanding of what we learned and how it will impact the Fantasy outlook of specific teams and players.

Here, we'll look at the leaderboards in several key metrics around running back usage, then share our look at whose stock is rising after this weekend's action. That includes Raiders back Josh Jacobs. "The 89% snap rate for Josh Jacobs in Week 4 was the highest of his career," Gibbs said. "He's only been above 80% one other time. His highest rate through the first three games was 75%. If Jacobs can continue to see anywhere near this type of usage, he's going to be one of the best values at the RB position after being pushed outside of the top-20 during Fantasy draft season."

If you have questions about any stats, players, or situations covered or not covered in this article, feel free to reach out to Gibbs on Twitter.

Week 4 Leaders

Snap rate

No stat correlates more closely with Fantasy scoring at the RB position than snap rate.

Route involvement rate

A player's route involvement rate simply represents the percentage of the team's total dropbacks on which that player ran a route. So, the running backs listed above ran a route on at least half of their team's dropbacks. Running routes is the first step towards drawing targets, which is key to unlocking Fantasy upside at the RB position.

Two of the most confounding players available at any position, Tony Pollard and Clyde Edwards-Helaire, are truly developing into Fantasy enigmas. The usage data for both suggests that they aren't players we should rely on to supply Fantasy production, yet both continue to find ways to produce efficiently on limited volume.

Red zone usage

The above tweet is of course supposed to reference Josh Jacobs' six Week 4 red zone touches, as Brandon Jacobs' playing days are far behind him.

Let's dig deeper into the full data on Week 4 usage rates.

Which star RB seems to be falling off? And what do you need to know about how running backs were used in the passing game this past week? ... Join SportsLine here to see Jacob Gibbs' Running Back Usage Report, all from one of the nation's most accurate experts as graded by FantasyPros!