Spencer Ware was set to take over the Kansas City backfield following the release of Kareem Hunt, but Ware's injuries opened the door for Damien Williams.
Devin Funchess is still probably a good prospect at wide receiver, but Curtis Samuel and D.J. Moore threaten to make him irrelevant all the same.
Gus Edwards was a late-season lifeline for those who added him a few weeks ago, but the return of Kenneth Dixon from IR could complicate the formula for Edwards.
Corey Clement still lurks in the background after playing well off the bench Sunday, but Adams has all the momentum after a 22-carry effort.
Demaryius Thomas was expected to see a substantial workload after Houston acquired him for a fourth-round pick, but rookie Keke Coutee appears Houston's WR2 for now.
Eric Ebron put forth an improbable but dominant showing against the Jaguars on Sunday as Indianapolis' third TE. Is this enough to earn him a promotion?
Ryan Fitzpatrick was supposed to be good for DeSean Jackson and bad for Adam Humphries, but Humphries had the big game Sunday. Expect that to be a one-time deal.
There was ambiguity about how the Colts would handle their tight end rotation after Eric Ebron emerged while Jack Doyle sat with a hip injury, but Sunday's game against Oakland cleared everything up.
After two strong seasons to open his NFL career, Amari Cooper infuriated his fantasy owners with inconsistency the last two years. Will we get the Good Coop or Bad Coop in Dallas?
Tevin Coleman might find success as a lead runner in the NFL eventually, but in the past month he's consistently lost ground to rookie fourth-round pick Ito Smith.
With Jay Ajayi suffering a season-ending ACL tear, the surging Wendell Smallwood will compete with a recovering Corey Clement (quad) for valuable snaps in a high-scoring offense.
Tarik Cohen might have Jordan Howard owners tilting after the speedy back led the Bears assault from scrimmage against Tampa, but a rising tide should carry them both.
Baker Mayfield might be a rookie, but potential fantasy owners need not worry about his job security. This competition is over.
Robby Anderson was the presumed WR1 with the Jets since last year's emergence, but Quincy Enunwa never said he could have his spot.
Joe Mixon's big game was one of the top stories from Sunday, but it took an improbable disappearance of Gio Bernard to clear the way.
The Broncos thinned their running back depth chart by cutting DeAngelo Henderson on Saturday, then named Royce Freeman starter on Monday.
Marqise Lee's season-ending injury is a substantial loss for Jacksonville, but it clears an obvious opening for Donte Moncrief.
Alfred Morris seemed done for, but he merits close monitoring in upcoming days as the 49ers sort through their undersized and beat-up backfield.
LeGarrette Blount and rookie second-round pick Kerryon Johnson are fighting for carries in Detroit, but the rookie is closing in.
Jeremy Hill looked all but done for following a disastrous 2017 in Cincinnati, but Sony Michel's knee issue could give Hill a bounce-back opportunity in 2018.
After accumulating 163 touches in the final eight games of 2017, Jamaal Williams is making a case to remain Green Bay's starting runner.
Robby Anderson was one of fantasy football's breakout players in 2017, but the talented third-year wideout faces much more competition for targets in 2018.
Mohamed Sanu is a steady presence for the Atlanta passing game, but first-round pick Calvin Ridley might be too talented to hold off.
Isaiah Crowell arrives to New York with 1,800 rushing yards to his credit over the last two years, but the rest of the Jets backfield will put up a fight.
In the first of two installments previewing running back training camp battles, a three-man skirmish for Indianapolis stands as the headliner.
We'll break down the most anticipated positional battles as training camp looms, beginning with Sam Bradford vs. Josh Rosen along with five other showdowns.