Lions RB Zach Zenner was evaluated for a concussion during Sunday's game against the Bears. The team hasn't announced the result of those tests, but Zenner wasn't allowed to speak with the media afterward. That suggests he did indeed sustain a concussion, putting his Week 15 status in question. RB Theo Riddick missed the Bears game with a wrist injury, and his availability going forward remains unclear. RB Dwayne Washington could be in for another busy outing this coming weekend against the Giants.

Lions RB Theo Riddick (wrist) is a surprise inactive for today's game against the Bears. He was limited in practice this week, but there was no indication that he was in danger of missing this contest. Riddick's absence leaves the backfield to Dwayne Washington, Zach Zenner and the recently signed Joique Bell. Washington and Zenner figure to handle most of the work and are in the RB3 mix.

The Lions have added RB Joique Bell. It's a depth signing after RB Dwayne Washington injured his ankle last week. Look for Theo Riddick and Zach Zenner to serve as Detroit's top 2 RBs against the Bears on Sunday. Bell can safely be left on the waiver wire.

Lions RB Dwayne Washington is inactive for today's game against the Texans. He wasn't listed on the final injury report, so this looks like a healthy scratch. Washington, for now, is behind Theo Riddick, Zach Zenner and Justin Forsett on the depth chart.

Lions RB Dwayne Washington (ankle) won't play against the Redskins today, per NFL Network's Ian Rapoport. RB Zach Zenner handled 14 carries and caught both of his targets with Washington (and Theo Riddick) out last week. He should be looking at a similar workload today vs. the Redskins' 24th-ranked RB defense. It makes Zenner a RB3 or flex option.

Lions RB Dwayne Washington (ankle) is questionable for Sunday's game against the Redskins after a limited week of practice. If active, he’d figure to share the backfield with Zach Zenner and Justin Forsett. Despite the plus matchup, Detroit’s backfield is best avoided this week.

Lions RB Dwayne Washington (ankle) is inactive for today’s game against the Rams. RB Theo Riddick (knee) is also out. That leaves Detroit with RBs Zach Zenner and Justin Forsett, who are expected to share the backfield work. Neither guy is an inspiring fantasy play in a running game that’s struggled all year.

ESPN's Adam Schefter reports that Lions RB Dwayne Washington (ankle) won't play against the Rams today. RB Theo Riddick (knee) has already been ruled out. That leaves Detroit with RBs Zach Zenner and Justin Forsett, who are "expected to split carries," per Schefter. Zenner is the slightly better bet in non-PPR; Forsett gets the slight edge in PPR. But neither guy is more than a RB3 or flex option.

Lions RB Theo Riddick (ankle) has been ruled out for Sunday's game against the Rams. We don't have any details on his injury, but he didn't practice all week and might miss additional time. RB Dwayne Washington (ankle) is listed as questionable for Week 6 after returning to a limited practice on Friday. If he plays, he'd figure to share the backfield with Zach Zenner and the newly signed Justin Forsett. Unless we get some clarity on this situation between now and kickoff, it's a situation best avoided.

Lions RBs Theo Riddick (ankle) and Dwayne Washington (ankle) both missed their 2nd straight practices on Thursday, casting doubt on their availability for this weekend's game against the Rams. Their absences would leave Detroit with RBs Justin Forsett and Zach Zenner. We'll have another update on the situation tomorrow.

Lions RB Dwayne Washington (ankle, knee) is inactive for today’s game against the Eagles. Zach Zenner will serve as Detroit’s #2 RB but shouldn’t be in fantasy lineups vs. Philly’s 2nd-ranked RB defense.

Lions RB Dwayne Washington (ankle, knee) is listed as doubtful for Sunday’s game against the Eagles. He didn’t practice all week and won’t play. Zach Zenner will step in as Detroit’s #2 RB, but we’re not expecting the running game to have much success vs. Philly.

Lions RB Dwayne Washington (foot, ankle) did not practice on Wednesday. He never returned to last weekend's game and looks like a long shot to play against the Eagles this weekend. That'd vault RB Zach Zenner to #2 on the depth chart, although we're not expecting Detroit to be able to run the ball vs. Philly.

The Lions have placed RB Ameer Abdullah on IR with the foot injury suffered last week, per NFL Network's Ian Rapoport. We're still waiting to find out more about Abdullah's exact injury, and there's a chance Detroit will slap him with the designated-to-return label. Even that would cost him the next 8 weeks, though, so go ahead and drop Abdullah in fantasy leagues. Theo Riddick takes over as Detroit's lead runner and will maintain a big passing-game role. He has a shot at weekly RB2 value. Dwayne Washington also figures to take on a bigger role and is worth a wait-and-see stash. Zach Zenner also figures to play after being a healthy scratch the first 2 games.

Lions RB Zach Zenner is a healthy scratch for today's opener against the Colts. He's behind rookie Dwayne Washington, as well as Ameer Abdullah and Theo Riddick, on the depth chart. Only Abdullah and Riddick are worth rostering in fantasy right now.

The Lions have released RB Stevan Ridley. He mustered just 3.0 yards per carry on 9 preseason totes. Ridley's departure locks in Zach Zenner as Detroit's #3 RB -- and potential goal-line back. He's worth a look late in drafts, especially in non-PPR or TD-heavy formats. Rookie RB Dwayne Washington has had a strong preseason and now looks like a better bet to make the team.

The Lions have signed RB Stevan Ridley.  Returning last year from a torn ACL, Ridley appeared in just 8 games and averaged 2.5 yards per carry.  He mustered just 3.6 YPC in 6 games back in 2014.  Ridley was productive in his first 3 NFL seasons, though, and is still only 27.  He figures to compete with Zach Zenner for the big-back role behind Ameer Abdullah.

RB Joique Bell said he turned down an offer that would have kept him with the Lions and chose to test free agency, according to the team website. Bell said there's "no bad blood" between the 2 sides, though, and said a reunion might be possible. We'll see if Bell's decision ends up helping his career. It undeniably helps Zach Zenner's chances of grabbing a larger share of the backfield workload in 2016.

Tim Twentyman of Lions.com confirms that RB Zach Zenner is set for a "considerable increase" in touches with RB Joique Bell out of the picture.  Zenner went undrafted last spring but was super productive at South Dakota St. and turned in an impressive Combine performance.  He averaged 5.2 yards per carry last preseason and was seeing an increased role before going down with broken ribs and a collapsed lung in Week 6.  Zenner will be worth keeping a close eye on this offseason and is shaping up as a potential sleeper in fantasy drafts.

The Lions have released RB Joique Bell, saving $2.5 million against the 2016 salary cap.  Bell turns 30 in August and averaged a career-worst 3.5 yards per carry this past season.  He won't draw much interest on the open market and isn't a good bet to be a fantasy asset this year.  Detroit moves forward with Ameer Abdullah, Theo Riddick and Zach Zenner in the backfield.  The 5'11, 222-pound Zenner might be the biggest winner from Bell's departure and will be a name to track this offseason.