Each year, we like to run a series of posts called "90-in-90." The idea is that we'll take a look at every player on the roster, from the very bottom to the top and break them down a few ways. This roster will certainly change, and some days we'll have more than one so it's not exactly 90 players in 90 days. At this point, it's a name we're keeping around for street cred.

Two-hundred and fifty-six players were just drafted ahead of you. You were expecting to be a mid-round pick, but for whatever reason (injuries), you fell out of the NFL Draft. Whatever, that's fine -- you know you'll find a team in undrafted free agency. The most important thing you can do now is pick the right team. Ideally, this team would have a need at your position and not feature a ton of competition at that position.

Going by those two rules, linebacker Shayne Skov did not pick the right team.

The San Francisco 49ers have a need at inside linebacker due to NaVorro Bowman's injury, but as an undrafted guy coming onto the team, Skov finds himself behind six other inside linebackers, counting Bowman. He's behind Michael Wilhoite, the guy who will likely fill in for Bowman, Chris Borland, the guy the 49ers drafted in the third round this offseason, Nick Moody, the guy who was drafted last season and Blake Costanzo, a special teams ace.

Personally, I liked Skov a lot more than Borland heading into the draft, and I was shocked when Skov didn't get drafted. Skov was noted as one of the best players who did not get drafted though, which is why I was excited to see him come to San Francisco. He had debilitating knee injuries over the course of his college career, but he seems to have mostly shaken those off and looked good last season.

Skov finished the 2013 season with 109 tackles, 13 tackles for loss and 5.5 sacks, good enough to make him a third-team AP All-American. That was with Stanford, which is notable since he did play under both Jim Harbaugh and Vic Fangio while there.

So here's what we have: a very productive linebacker who sustained serious injuries in college and was banged up this offseason. Now, while the odds are stacked against him, I don't think Skov is totally unable to earn a roster spot this season. Borland and Wilhoite are pretty much guaranteed in my mind, given the draft status and experience. But Bowman's injury means the 49ers will keep an extra inside linebacker, and that's Skov's chance.

Basically, Skov will have to beat out Moody above all else, and then he'll have to show enough special teams ability and upside to get the nod over Costanzo. It's a daunting task, but he's a very talented player.

Expected 2014 impact:

If he makes the roster, then Skov would be a special teams player and nothing else. That's even if he is active. If he somehow remains on the roster alongside Costanzo, then he wouldn't be seeing the field at all in 2014. There's not really a situation in which he finds himself on the field on defense.

Odds of making the roster:

As far as making the roster goes, I think he has a solid chance. When I say "a solid chance," I do mean that he'd be the first one released once Bowman comes back from his injury, though. But that does mean he could be on the roster for a good half of the season, I just find it hard to imagine him actually playing. I'd say his chances are lower than 50 percent at this point, but he's an excellent practice squad choice.