Running backs Dalvin Cook, Josh Jacobs, Darrell Henderson, Trey Sermon, and Elijah Mitchell all find themselves on their teams' practice injury reports heading into Week 3. They all have different outlooks for Sunday but warrant keeping a watchful eye moving forward. Our RB fantasy injury updates give the latest scoop on each players' progre s and how it will affect fantasy RB rankings and start 'em, sit 'em decisions.For updates on banged-up WRs Diontae Johnson,Amari Cooper, andOdell Beckham Jr.,click here; Forall the latest fantasy news, follow us on Twitter .WEEK 3 PPR RANKINGS: | | | | | Dalvin Cook injury updateUPDATE:Cook did not practice on Thursday. Russ Grimm Jersey We're a suming he's going to play based on Mike Zimmer's comments, but we'll have to keep an eye on him until Sunday.UPDATE 2:Cook didn't practice on Friday and will be a game-time decision for Sunday's game.Cook has been impre sive this year, but the injury bug struck him again in Week 2. He has a sprained ankle, but Vikings aren't worried about his status. Mike Zimmer " Of course, it's great news for Cook fantasy owners (for now) that he'll continue to be a workhorse, but there's also the chance he'll worsen his injury.The Vikings aren't being cautious, but as Cook fantasy owners, you should be. It's not a guarantee he'll suffer any sort of setback, but it would be smart to have a backup plan. The most obvious choice is his handcuff, Alexander Mattison, but lookaround your league and potential "buy-low" running backs or keep a keen eye on the waiver Chris Cooley Jersey wire. If Mattison is available in your league, pick him up whether you own Cook or not.For Week 3, Cook is our and . If injuries play no effect, Cook should have a monster outing against a bad Seattle defense that gave up 212 yards rushing to the Titans.WEEK 3 STANDARD RANKINGS: | | | | | Is Josh Jacobs playing Week 3?UPDATE:Jacobs wore a in the early portion of practice on Thursday. Consider that a mixed bag for his Week 3 prospects.UPDATE 2:Jacobs is officially "doubtful" for Sunday's game.Josh Jacobs is still that kept him out of Week 2 and has held him out of practice so far this week. The Raiders are 2-0 and face Jacoby Bri sett and the Dolphins in Week 3. This should be a winnable game without Jacobs, and Jon Gruden has made it a point to expre s his belief in Kenyan Drake Washington Commanders Jackets and Peyton Barber. Maybe you don't believe in Barber, but we have to take into account that Gruden does.It's now a 17-game season, so we could start to see players sit more often when they are on the wrong side of "questionable."We don't know for sure if Jacobs will be out, but it's obviously not looking great. We'll continue to update his section of this article if something changes.We'll make adjustments to our rankings if Jacobs is out, but a suming he's playing, he's our and . If he can't go, Kenyan Drake is attractive in PPR leagues.MORE WEEK 3: | | Darrell Henderson injury updateUPDATE:Henderson did not practice all week and is officially "questionable" for Sunday's game.Henderson (ribs) did not practice on Wednesday, and coach Sean McVay said but didn't rule him out just yet. Heading into a matchup with arguably the best front-seven in football (vs. Buccaneers), Henderson is a potential bust week even Sonny Jurgensen Jersey if he does play.If he does mi s Week 3, Sony Michel should dominate L.A.'sRB touches, but it's tough to think the Rams will run the ball with high frequency. They're more likely to do what Dallas did against Tampa Bay in Week 1 -- air it out early and often. So, no matter who is at RB, we don't like their chances.In our , we rank Henderson at RB39 and Michel at RB45. In , we have Henderson at RB44 and Michel at RB46.WEEK 3 DFS LINEUPS: | | Trey Sermon injury updateUPDATE:49ers coach Kyle Shanahan said early Thursday that Sermon is "" toward playing in Week 3.UPDATE 2:Sermon is not on the 49ers final injury report, indicating he'll start on Sunday night.Sermon (concu sion)was limited at practice Wednesday. This honestly is good news, as concu sions range from very mild to severe. If his concu sion protocols are going well enough for him to practice in any capacity, that seems to point toward him playing in Week 3. Obviously, this could change. With JaMycal Hasty (ankle) out, and Elijah Mitchell dealing with a shoulder injury (see below), it could finally be time for Sermon to have a role in the offense.However, the keyword is -- could. We still can't project that, so we have him as theand for Sunday night's game against Green Bay.MORE WEEK 3 DFS: | | Elijah Mitchell injury updateUPDATE:49ers coach Kyle Shanahan said early Thursday that Mitchell has a "" of playing in Week 3 and that his should injury was "a little more" than the stinger the team was hoping for.UPDATE 2:Mitchell is officially "doubtful" for Sunday night's game.Mitchell (shoulder) mi sed practice Wednesday, but after finishing the game in Week 2, he seems likely to suit against the Packers. He seems to have a firm grip on Sam Howell Jersey the 49ers' primary RB role (at least as much as po sible in the RBBC). We'll have to stay tuned for more updates, but he's definitely the guy you want to play in that backfield if he's available.He's our and facing a bad Packers defense. If he's inactive, surely Trey Sermon is the next man in line, right?