McCaffrey won't practice Tuesday due to back stiffness, Matt Barrows of The Athletic reports.

Per David Lombardi of SFStandard.com, McCaffrey said the back issue isn't anything serious. McCaffrey dealt with the same injury concern earlier this month but was ultimately active for the 49ers' 37-24 win over the Titans back in Week 15. He hadn't been listed on the injury report in the ensuing two weeks, but the Niners are coming off a back-and-forth fight with the Bears this past Sunday and have a quick turnaround for the battle for the NFC's No. 1 seed this Saturday against the Seahawks. The expectation is that McCaffrey will be ready to play Saturday, but whether he takes a designation into the contest won't be known until the 49ers release their final injury report Thursday.

The Buccaneers signed Williams to the practice squad Tuesday, Greg Auman of Fox Sports reports.

Williams was waived from the Buccaneers' active roster Monday, but he will remain in Tampa Bay as a member of the team's practice squad. He last saw regular-season action in Week 10 against the Patriots and has logged four carries for 11 yards and five kickoff returns for 129 yards across three games.

The Jets signed Blackshear to the practice squad Tuesday, Susanna Weir of the team's official site reports.

Blackshear has not appeared in a regular-season game in 2025 and was on the Steelers' practice squad before being cut in late October. He could be elevated to the Jets' active roster for Sunday's regular-season finale against the Bills if either or both of Breece Hall (knee) and Isaiah Davis (concussion) are unable to play.

The Packers signed Martinez to the practice squad Tuesday.

With MarShawn Lloyd (hamstring) on injured reserve, it seems the Packers would like to bolster their running back room before the upcoming playoff run. The rookie seventh-rounder was waived by the Seahawks at the end of the preseason and has not yet seen action in an NFL regular-season game. Lloyd will be a candidate for elevation if Josh Jacobs, Emanuel Wilson or Chris Brooks were to suffer an injury in the coming weeks.

Head coach Dave Canales said that Dowdle was held out of Tuesday's walk-through practice due to a sore toe, Darin Gantt of the Panthers' official site reports.

Canales termed Dowdle's absence as a rest day and labeled him day-to-day, which suggests the Panthers aren't too concerned about the running back's availability for Saturday's regular-season finale at Tampa Bay. The Panthers will wait and see if Dowdle is able to get back on the practice field in some fashion Wednesday and/or Thursday before determining his status for Saturday. Given that the NFC South title may be at stake in the game, expect Dowdle to do everything in his power to suit up against the Buccaneers, and he also has plenty of financial incentive to be in the lineup -- he needs just seven more scrimmage yards to trigger a $1 million bonus in his contract.

Kiner took his only carry for two yards during Sunday's 37-14 loss in Cincinnati.

One week removed from earning a career-high six rushes that he turned into 32 yards, the undrafted rookie logged just two offensive snaps in Week 17, with the aforementioned carry occurring in the middle of the second quarter. Kiner ranked third in the RB pecking order for the Cardinals behind Emari Demercado's 30 snaps and seven touches and Michael Carter's 23 and nine, respectively. Such a breakdown likely will continue in Arizona's regular-season finale Sunday at the Rams.

White rushed once for two yards in Sunday's 34-10 loss to the Giants.

White suited up for the first time since Week 5 with Raheem Mostert (ankle/knee) sidelined Sunday, but White ultimately handled just one offensive touch while rookie Ashton Jeanty took 16 carries for 60 yards to go along with a pair of receptions. Fellow running back Dylan Laube was restricted to a special-teams role, so White could serve as the Raiders' RB2 again in Week 18 if Mostert remains out.

Allgeier rushed 10 times for 23 yards in the Falcons' 27-24 win over the Rams on Monday night.

The reserve back saw backfield mate Bijan Robinson tear through the Rams for 195 yards on 22 carries, but Allgeier had nowhere near the same amount of success finding running room. Allgeier's 2.3 yards per carry was his second-lowest figure of the season, yet the fourth-year pro could have a good opportunity to bounce back in a Week 18 regular-season finale against a vulnerable Saints run defense.

Williams took 13 carries for 92 yards while corralling all three of his targets for 38 yards in Monday's 27-24 loss to Atlanta.

RB Blake Corum (6-18-0) exited Monday Night Football in the second quarter with an ankle injury and did not return. Williams took full advantage of the extra work in the second half and finished the narrow loss just a yard shy of his single-game high in yards from scrimmage this season (131). The extent of Corum's injury isn't clear at the moment, but the team may opt to play it safe with the talented backup Week 18. Rams' beat writer Stu Jackson reported that coach Sean McVay will deploy his healthy starters against the Cardinals on Sunday, though it's unclear whether Williams will have the backfield all to himself for the regular-season finale, given he was examined for a high-ankle sprain in the fourth quarter before being cleared to return to Monday's game, per Adam Grosbard of The Orange County Register.

Demercado turned five carries into 11 yards and gathered in two of three targets for nine yards during Sunday's 37-14 loss at Cincinnati.

Demercado actually paced Arizona's backfield with a 53 percent snap share ahead of Michael Carter's 44 percent and Corey Kiner's four percent, but game script resulted in the Cardinals attempting 37 passes versus just 13 combined runs. Carter tallied seven rushes for 29 yards to lead the team on the ground and also added two catches (on four targets) for 14 yards. Since Bam Knight (ankle) joined James Conner (foot) and Trey Benson (knee) on injured reserve after Week 15, Demercado has notched just 12 touches for 50 total yards over the last two games, leaving him on the outside looking in to fantasy relevance Week 18 against the Rams.