NFL Player News

Cook (hamstring) is tentatively scheduled to play in Sunday's game against the Lions and handle a limited snap count, Ben Goessling of the Minneapolis Star Tribune reports.

The Vikings reportedly entered Week 6 against Arizona with a similar plan, only to scrap it when Cook's hamstring didn't feel up to par during pregame warmups. It sounds like he'll be headed for another game-time decision Sunday against the Lions, with kickoff mercifully scheduled for 1 p.m. EST. Given the uncertainty about his health and workload, Cook will be tough to trust in lineups even if he's cleared to play. His return would be bad news for anyone hoping to start Latavius Murray this week.

The Buccaneers ruled Jones (hamstring) out for Sunday's game against the Panthers, Scott Smith of the team's official site reports.

Jones didn't practice at all this week and never really had much hope of playing after it was revealed he was dealing with a strained hamstring in the aftermath of the Week 8 loss to the Bengals. The rookie's absence gives Peyton Barber a higher degree of workload certainty, while undrafted rookie Shaun Wilson is expected to be active as the No. 3 running back behind Barber and Jacquizz Rodgers. Given the lack of practice participation, it feels like a stretch to expect Jones back for Tampa Bay's Week 10 game against Washington.

Breida (ankle) rushed 12 times for 41 yards and brought in his only target for three yards in the 49ers' 34-3 win over the Raiders on Thursday. He also recovered a fumble.

Breida was outperformed by backfield mate Raheem Mostert, who ultimately suffered what appears to be a season-ending forearm injury during the contest. That projects to leave Breida in the driver's seat for lead-back duties moving forward, and the 11 days off before a Week 10 Monday night battle against the Giants should do the 23-year-old back some good. Breida has been hampered by an ankle injury of late, which appears to have robbed him of some of his trademark explosion -- after averaging between 4.2 and 12.5 yards per rush in his first six games, Breida has posted yard-per-carry figures of 2.6 to 3.4 over his last three contests.

Martin rushed 11 times for 49 yards and brought in one of two targets for 20 yards in the Raiders' 34-3 loss to the 49ers on Thursday.

Martin once again handed lead-back duties and was fairly efficient in the role. However, game flow certainly conspired against him, as the 49ers boasted a 17-3 halftime lead that they expanded to 31-3 by the end of three quarters. Martin has rushed 24 times for 121 yards in his first two games as the No. 1 back, a feat made all the more impressive by the fact it's taken place behind an offensive line that often has trouble providing any type of resistance against opposing fronts. Martin will hope for more opportunities against the Chargers in a Week 10 battle.

Mostert is likely out for the season after fracturing his right forearm in Thursday's win over the Raiders, Matt Maiocco of NBC Sports reports.

While he is not officially out for the season, head coach Kyle Shanahan assumes it is the case for Mostert given the gruesome nature of the injury. If he does land on injured reserve, he will be joining fellow running back Jerick McKinnon (knee), leaving the 49ers with Alfred Morris and Matt Breida as the only healthy options currently on the roster. Expect the team to bring in a free agent back or promote one from the practice squad before next Monday's matchup with the Giants. Mostert had his best performance of the season before exiting the contest, recording 86 yards and a touchdown on seven carries.

Mostert is out for the remainder of Thursday's game against the Raiders with a forearm injury.

Mostert was tripped up in the backfield on a third quarter run and suffered a gruesome looking injury to his forearm. The third-year back headed to the locker room in an air cast and could be looking at an extended absence going forward. Mostert was electrifying before exiting, ripping off multiple big runs including a 52-yard scamper in the third quarter. Matt Breida and Alfred Morris figure to head up the 49ers backfield if Mostert indeed misses game action.

Mostert (ankle) is active for Thursday's game against the Raiders.

The 49ers will have all their backfield options at their disposal in Week 9 with both Mostert and Matt Breida shaking off their respective injuries to play on short rest between games. It appeared Mostert had settled in as the top complement to Breida after compiling 146 yards on 19 carries between Weeks 6 and 7, but the 26-year-old saw his opportunities take a hit in the Week 8 loss to the Cardinals, as he earned only two touches while Alfred Morris (six carries for 28 yards) took on an expanded role. It's thus difficult to predict how the backfield workload might shake out against Oakland, but the 49ers could lean more heavily on the ground game as a whole with an unproven quarterback Nick Mullens taking his first NFL snaps while filling in for injured starter C.J. Beathard (wrist/thumb).

Breida (ankle) is listed as active Thursday against the Raiders.

Per usual, Breida is playing with his health compromised, but it hasn't stopped him from leading the backfield most weeks this season. In a Week 8 loss at Arizona, he handled 31 (of 66) snaps on offense, which was nearly three times the usage of fellow running backs Raheem Mostert (12) and Alfred Morris (11). With Mostert tending to an ankle injury himself, Breida seems like a safe bet to maintain the upper hand in the 49ers backfield.

Gordon (hamstring) remained limited at practice Thursday.

Back-to-back practices, albeit in a limited fashion, put Gordon on the right track as Sunday's game against the Seahawks approaches. We'll revisit his status no later than Friday afternoon, upon the release of the team's final Week 9 injury report. Ideally, he'll approach the weekend minus an injury designation, given that the Chargers are kicking off at 4:05 ET on Sunday.

Kamara didn't practice Thursday due to an illness.

Kamara wasn't present at the open portion of the session, after which Mike Triplett of ESPN.com reported an illness was the reason for the running back's absence. Thursday's injury report confirms as much. Fortunately for Kamara, he fell ill midweek rather than close to gameday, which indicates the Saints may clear him well before Sunday's contest with the Rams.