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The 49ers placed Mostert (knee) on injured reserve Tuesday.
Analysis: San Francisco officially removed Mostert from its 53-man roster a few hours after the running back announced he would undergo season-ending surgery to address the cartilage damage to his knee he sustained Sunday in the 49ers' season-opening win over the Lions. Mostert expects to be back to 100 percent health for the start of the 2022 campaign, but he could be suiting up for a different team, as he'll become a free agent during the upcoming spring. Meanwhile, the 49ers are expected to give Elijah Mitchell the first crack at the No. 1 role out of the backfield, with Trey Sermon and JaMycal Hasty on hand in complementary roles. Additionally, San Francisco signed veteran Kerryon Johnson to its practice squad Tuesday, and he could eventually factor into the backfield equation at some point.
Sep 14, 2021 2:29 PM EST
Mostert announced Tuesday via his personal Twitter account that he will undergo season-ending knee surgery.
Analysis: Though 49ers head coach Kyle Shanahan estimated Monday that Mostert would require an arthroscopic procedure and miss about eight weeks after sustaining chipped cartilage in his knee in the team's season-opening win over the Lions, the running back is instead electing to undergo what's believed to be a full meniscus repair, per Mike Garafolo of NFL Network. While the surgery will necessitate a longer recovery timeline, Mostert should have a brighter long-term health outlook rather than if he had returned in the second half of the season and continued to play through the knee issue. Expect the 49ers to officially place Mostert on season-ending injured reserve later this week, paving the way for the Elijah Mitchell, JaMycal Hasty and Trey Sermon to lead the ground game moving forward.
Sep 14, 2021 12:01 PM EST
Mostert (knee) has been ruled out for the remainder of Sunday's game against the Lions, Keiana Martin of the 49ers' official site reports.
Analysis: The knee injury Mostert suffered in the first half of Sunday's game will prevent him from seeing any more action in Week 1, so Elijah Mitchell and JaMycal Hasty will split the carries for the remainder of the day. The extent of Mostert's injury is not yet known, but head coach Kyle Shanahan figures to provide some sort of update after the game concludes.
Sep 12, 2021 11:57 AM EST
Mostert (knee) is questionable to return to Sunday's game against the Lions, according to Matt Barrows of The Athletic.
Analysis: This isn't a promising sign for the 49ers, as they're already quite thin in terms of depth at running back. Elijah Mitchell and JaMycal Hasty are expected to gain a bigger role if Mostert is unable to return to action in the contest, given that Trey Sermon is inactive Sunday.
Sep 12, 2021 10:47 AM EST
Mostert rushed seven times for 53 yards in Sunday's 34-10 preseason win over the Raiders.
Analysis: Mostert garnered all of San Francisco's running-back touches on its first offensive drive and was highly efficient with his opportunities. He then saw rookie Trey Sermon incorporated on the second series, and fellow tailbacks JaMycal Hasty and Wayne Gallman shine afterward. Although Sermon should factor prominently in the 49ers' backfield rotation, Mostert seems the most likely candidate to start in Week 1 versus the Lions, which would give him good upside as the leader of an often-dominant running scheme.
Aug 29, 2021 4:33 PM EST
Mostert isn't slated to play in Sunday's preseason game at the Chargers, Nick Wagoner of ESPN.com reports.
Analysis: Despite coach Kyle Shanahan's assertion that the starters would log at least a quarter of work in preseason Week 2, Mostert won't be available to the 49ers offense Sunday. Mostert will be joined by rookie running backs Trey Sermon and Elijah Mitchell (hip) on the sideline, leaving the backfield to Wayne Gallman, JaMycal Hasty, Kyle Juszczyk and Josh Hokit.
Aug 22, 2021 3:48 PM EST
Mostert is in line to play in Sunday's preseason contest at the Chargers, David Lombardi of The Athletic reports.
Analysis: Coach Kyle Shanahan said after Friday's joint practice with the Chargers that 49ers starters will log "a quarter, a quarter and a half" in their second exhibition. As a result, it appears San Fran is set to have its dress rehearsal for the regular season Sunday. Mostert should get a lot of the backfield reps while the starters are on the field, yielding the occasional touch to Trey Sermon and perhaps even Wayne Gallman.
Aug 20, 2021 5:10 PM EST
Mostert is not expected to play in Saturday's preseason opener against the Chiefs, according to Eric Branch of the San Francisco Chronicle.
Analysis: Mostert's absence does not appear to be injury-related, as he has taken part in practice since training camp began. Injuries limited Mostert to just eight games in 2020, so expect the 49ers to take it easy with him during the preseason so he is good to go for Week 1.
Aug 14, 2021 5:11 PM EST
Mostert (knee) fielded some punts at Wednesday's practice, Keiana Martin of 49ers.com reports.
Analysis: The main takeaway is that Mostert returned healthy for the start of training camp after dealing with a minor knee injury during OTAs. He's never returned a punt in a regular-season game and isn't likely to start at this point in his career, though he was largely valued for his work on special teams prior to a late-2019 breakout. Mostert then made eight starts for the Niners in 2020, but he left two of those games early and missed eight others, held back by knee and ankle sprains. He did put up 65.1 rushing yards per game and 5.0 YPC, and he displayed his trademark speed on an 80-yard TD run and a 76-yard receiving score in September. While the explosiveness may keep Mostert atop San Francisco's depth chart, Tim Kawakami of The Athletic suggests rookie third-round pick Trey Sermon "already seems to be pretty much 1B to [Mostert]'s 1A at the tailback spot."
Jul 29, 2021 7:52 AM EST
Mostert didn't participate in Wednesday's OTA due to a knee issue but is expected to be fine for training camp, Matt Maiocco of NBC Sports Bay Area reports.
Analysis: Mostert pieced together a strong showing in his eight games for the 49ers last season but had trouble staying on the field and finished the campaign on IR due to an ankle injury. Unfortunately, his offseason appears to be starting with an injury as well, though this one isn't expected to cost him many meaningful reps.
Jun 2, 2021 12:44 PM EST
Mostert (ankle) was placed on injured reserve Tuesday, ending his 2020 season, Tom Pelissero of NFL Network reports.
Analysis: Mostert's season was plagued by injuries, as ankle and knee injuries will end up costing him eight games this year. The 28-year-old running back rushed 104 times for 521 yards and two touchdowns this season, and he caught 16 of 19 targets for 156 yards and a score. The 49ers will close out the 2020 campaign with a committee of Jeff Wilson (ankle), Tevin Coleman and Jerick McKinnon. Mostert is under contract for the 2021 season at a $3.3 million cap hit.
Dec 22, 2020 11:46 AM EST
Mostert (ankle) isn't expected to return in the 2020 season, Ian Rapoport of NFL Network reports.
Analysis: Mostert missed four games earlier this season with a left ankle injury, and he never fully recovered from the injury. The 28-year-old tailback suffered a high-ankle sprain to the same ankle in this past Sunday's loss to the Cowboys. With the 49ers eliminated from playoff contention, they're expected to shut Mostert down for the rest of the season. If that's the case, a committee of Jeff Wilson (ankle), Tevin Coleman and Jerick McKinnon will handle the backfield reps for the final two games.
Dec 22, 2020 11:18 AM EST
Mostert left Sunday's game at Dallas due to an ankle injury, Matt Maiocco of NBC Sports Bay Area reports.
Analysis: Mostert logged a one-yard carry on the 49ers' first offensive play of the second half, but shortly thereafter he was seen grabbing at his left ankle on the bench, per Nick Wagoner of ESPN.com. Deemed questionable to return, Mostert will finish Week 15 with 14 carries for 68 yards if he's unable to do so. In the meantime, Jeff Wilson will carry the load out of San Fran's backfield.
Dec 20, 2020 12:14 PM EST
Mostert (ankle) doesn't have an injury designation for Sunday's game in Dallas, Cam Inman of The San Jose Mercury News reports.
Analysis: Mostert had an MRI at the beginning of the week and was held out of practice Wednesday. He apparently made good progress, so he's expected to get the Week 15 start, presumably continuing to split backfield work with Jeff Wilson. It's an excellent matchup, as the Cowboys have surrendered a league-worst 5.1 yards per carry.
Dec 18, 2020 12:57 PM EST
Mostert (ankle) practiced in a limited fashion Thursday, Nick Wagoner of ESPN.com reports.
Analysis: Mostert emerged from the 49ers' Week 14 loss to Washington with an ankle issue, marking his second such injury of the campaign. Clearly, the current one is far less severe, as he followed up Wednesday's absence with some activity one day later. He has one more opportunity to bump up to full Friday, but even if he doesn't he seems poised to be no less than 'questionable' for Sunday's game in Dallas. Behind Mostert, Jeff Wilson is next in the pecking order at running back, with Tevin Coleman and Jerick McKinnon also on hand.
Dec 17, 2020 2:32 PM EST
Coach Kyle Shanahan said Mostert (ankle) won't practice Wednesday, Nick Wagoner of ESPN.com reports.
Analysis: Mostert has missed four games this season due to a high-ankle sprain, but he's also served in a timeshare at running back for each of the past three contests, racking up 156 yards from scrimmage and one TD on 44 touches during that span. Shanahan told Wagoner on Monday that Mostert emerged from this past Sunday's loss to Washington with an ankle issue that required "further imaging." The results of those tests haven't been revealed, but Mostert isn't exactly kicking off Week 15 prep in great shape. Jeff Wilson, Tevin Coleman and Jerick McKinnon are the next running backs up for the 49ers.
Dec 16, 2020 12:24 PM EST
Mostert is slated to have further imaging done on his ankle, Nick Wagoner of ESPN.com reports.
Analysis: With that in mind, coach Kyle Shanahan said the 49ers will know more about the running back's status Wednesday. If Mostert is out or limited Sunday against the Cowboys, Jeff Wilson, as well as Tevin Coleman and Jerick McKinnon would be in line for added backfield snaps in Week 15.
Dec 14, 2020 3:07 PM EST
Mostert carried 14 times for 65 yards and caught two of four targets for five yards during Sunday's 23-15 loss to Washington.
Analysis: Mostert averaged a respectable 4.6 yards per carry against a stingy Washington front but finished shy of 15 carries for the second straight week. He finished fourth on the team in targets and made a pair of receptions, though he failed to break either for a notable gain and finished averaging a mere 2.5 yards per catch. Mostert has totaled just 156 scrimmage yards on 44 touches over the last three games and will look to break out of his slump next Sunday against a Cowboys defense that has been gashed on the ground by many opponents this season.
Dec 13, 2020 5:49 PM EST
Mostert rushed nine times for 42 yards and secured two of five targets for 12 yards in the 49ers' 34-24 loss to the Bills on Monday night.
Analysis: Playing his second game since returning from injured reserve due to an ankle sprain, Mostert got off to a good start early but ended up splitting carries with Jeff Wilson (seven rush attempts) almost evenly while also becoming a victim of game script. The 49ers were forced to increasingly turn to the pass in the second half due to a multi-possession deficit, helping lead to Mostert's second lowest rushing workload of the campaign. Mostert was still relatively efficient on a per-touch basis and will look to up his overall production in a tough Week 14 matchup against Washington.
Dec 7, 2020 9:13 PM EST
Mostert carried 16 times for 43 yards and a touchdown while catching both his targets for one additional yard during Sunday's 23-20 loss to the Rams. He also lost a fumble.
Analysis: Making his first appearance since mid-October, Mostert got his team on the board with an eight-yard rushing touchdown in the first quarter. He averaged just 2.7 yards per carry and hardly made an impact as a receiver, but it was still a respectable performance all things considered. Meanwhile, Jeff Wilson Jr. and Jerick McKinnon combined for 75 yards on 17 touches, though neither player was particularly effective. Assuming he didn't suffer any nagging effects of his ankle injury, Mostert could be in line to make a bigger impact next Monday night against the Bills.
Nov 29, 2020 7:26 PM EST
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