Marks was a limited participant in practice Thursday due to a calf injury.

Marks wasn't listed on Wednesday's injury report, so his limitations Thursday are noteworthy. Friday's report will reveal whether the running back approaches Sunday's game against the Broncos with an injury designation or is fully cleared to maintain his key role in Houston's backfield.

Neal (ankle) practiced in a limited fashion Thursday, Katherine Terrell of ESPN.com reports.

Neal maintained his activity level from Wednesday as he tends to an ankle injury. No. 1 RB Alvin Kamara also is operating with a cap on his reps this week due to a lingering ankle issue, but there's been no indication that either player is in danger of sitting out Sunday's game at the Rams. In Week 8 against the Buccaneers, Neal took over the No. 2 role following Kendre Miller's torn ACL, logging a 46 percent snap share and netting 11 yards on his three catches. Meanwhile, Kamara handled 51 percent of the plays on his way to 45 yards from scrimmage on eight touches.

Allgeier (knee) was a limited participant at Thursday's practice.

Allgeier took a questionable tag into Atlanta's Week 8 loss to the Dolphins due to hip and knee injuries but wound up playing a season-high 40 percent snap share and scoring the Falcons' lone touchdown. He's back on the injury report Thursday after avoiding Wednesday's injury report. Friday's injury report will reveal whether Allgeier has an injury designation for Sunday's game against the Patriots.

Polalrd (neck) practiced without limitations Thursday.

Pollard popped up on the injury report Wednesday after his practice participation was limited by a neck injury, but he returned to full participation Thursday, paving the way for Pollard to suit up Sunday against the Chargers. Pollard has logged exactly 12 touches in each of his last three games and will likely continue to work in a timeshare with Tyjae Spears on Sunday.

Jacobs (calf) practiced on a limited basis Thursday, Matt Schneidman of The Athletic reports.

Jacobs is operating with practice limitations for a second consecutive week due to a calf issue, but he was able to play through it the last two games en route to 30 touches for 103 yards from scrimmage and one rushing TD during that span. He avoided a designation on the Packers' final Week 8 injury report last Friday, so a similar scenario may come to pass this week.

Kamara (ankle) was limited in practice Thursday, Katherine Terrell of ESPN.com reports.

Kamara has played through the ankle issue the last two games, combining for 17 carries for 49 yards, five catches (on five targets) for 25 yards and no touchdowns. He avoided an injury designation in advance of both contests, so Friday's injury report may clear him for action yet again. Assuming he's available Sunday at the Rams, Kamara will be working with rookie QB Tyler Shough, who is taking over for Spencer Rattler moving forward.

Vaki (groin) was a limited participant at Thursday's practice.

Vaki has opened Week 9 prep with a pair of limited practices as he tries to return for his first game action since Week 3. If Vaki gets the green light to play Sunday against the Vikings, he could serve as Detroit's third-string running back, as Craig Reynolds (hamstring) has yet to practice this week.

Davis (illness) was listed as a full participant at Thursday's practice.

Davis practiced without limitations, indicating he has recovered from the illness that prevented him from practicing Wednesday. He has logged nine touches apiece in a pair of lopsided wins but hasn't exceeded two touches in any of Buffalo's other five games, so Davis isn't expected to play a significant role against the Chiefs on Sunday.

Haskins (hamstring) isn't practicing Thursday, Kris Rhim of ESPN.com reports.

That's now five straight missed practices for Haskins since he hurt his hamstring against the Colts in Week 7. His status for Sunday's matchup versus Tennessee is in considerable peril, and whether he even has a chance to suit up in that game should be known upon the submission of Friday's final injury report. Kimani Vidal should continue to lead the Chargers' running-back corps regardless of whether Haskins is able to suit up, but another absence by the latter would likely result in Jaret Patterson being elevated from the practice squad again for the contest against the Titans.

Johnson (back) remained a non-participant at practice Thursday.

Johnson hasn't practiced or played since Week 7 against the Saints. Even on the off chance he recovers in time to suit up Sunday against the Bengals, Johnson would likely remain in a depth role behind D'Andre Swift (groin) and Kyle Monangai.