Earlier we looked at five reasons to believe that the Redskins will be successful in 2018.

Today, it’s the other side of the coin as we look at five reasons for concern.

Here are the five reasons for concerns with the Redskins in 2018.

1. CORNERBACKS: There's Josh Norman, and after that, a whole bunch of question marks.

I think that Quinton Dunbar can hold down the right side and that Fabian Moreau can be an effective slot corner. But we don’t really know.

I’m also unsure that rookies Greg Stroman and Danny Johnson warrant the confidence the coaches apparently have in them. And Adonis Alexander has missed more than a week with a hamstring injury. He did play against the Broncos, but after he missed all of OTAs and minicamp, he is as green as they come.

This group could be good, but maybe just not in 2018.

2. OFFENSIVE LINE DEPTH: It’s hard to believe that the Redskins will suffer the same number of injuries on the offensive line as they did last year.

But if they even come close, the Redskins could be in trouble. In the interior, Tony Bergstrom and Tyler Catalina, the backups at center and guard respectively, have not impressed during the preseason. At tackle, Ty Nsekhe has not been fully healthy since early last season and Geron Christian is very green.

3. OUTSIDE LINEBACKER DEPTH: Depth on the offensive line only matters when an O-lineman gets hurt. Having extra capable edge rushers matters game in and game out since players are rotated there.

If the rush drops off substantially when Ryan Anderson and/or Pernell McPhee are in the game, opposing quarterbacks could take advantage of the Redskins’ potentially shaky cornerback group.

4. WIDE RECEIVERS: I was going to say WR depth here, but with the questions about Josh Doctson’s ability to have a big season and the fact that Paul Richardson has just one fairly good NFL season on his resume, makes the starters an area of concern as well.

As far as the backups, they will likely choose three between Maurice Harris, who has had issues staying on the field, rookies Trey Quinn and Cam Sims, and veteran Brian Quick, who had six receptions in 11 games last year.

5. RUNNING BACKS: Yes, even with Adrian Peterson in the fold this group isn’t very strong. Peterson looked good against the Broncos, but his durability is in question; he has played 16 games in a season just once since 2013 and he played in just 10 last season.

Rob Kelley can be effective, but injuries hit him hard last year. Samaje Perine has yet to demonstrate that he can keep going after first-contact.

And it would not be surprising to see Chris Thompson take a while to get rolling as he recovers from a broken leg.

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