Adrian Peterson is one of the injury prone running backs you should be concerned about going into your fantasy football league's draft.
Even if your league's scoring system favors running backs, you have to make sure that the players you select in the first couple of rounds have a small chance of getting injured.
Let's look at three injury prone running backs to avoid in the first couple of rounds of your draft.
McFadden might be one of the riskiest players in fantasy football this season. He has looked good in the preseason, but his past injury problems are certainly a legitimate concern.
He missed nine games last season, and has missed 19 games over the last four years. He's very productive when he's on the field, but you cannot waste a first, second, or third-round pick on a player who isn't a lock to play 10-12 games.
Since he's an important part in the Oakland Raiders rushing and passing attack, McFadden will pile up the stats that fantasy owners want to see if he can remain healthy.
If you're feeling bold, and your league's scoring system favors running backs, consider taking McFadden in the top seven picks of your draft.
Knowshon Moreno, Denver Broncos
Moreno missed nine games last season, and three the year before.
Even if he stays healthy for an entire season, it's unlikely that he will reach 1,000 yards rushing. After all, the Broncos will likely throw the ball a lot more now that Peyton Manning is under center.
Moreno also has to compete for carries with Willis McGahee, who is the starting running back in Denver.
Only add Moreno to your team's roster if you need to replace an injured player, a player on a bye week or if you're desperately seeking depth at the running back position.
Adrian Peterson, Minnesota Vikings
Injuries have been a common problem for Adrian Peterson as a star running back at Oklahoma, and in the NFL with the Minnesota Vikings.
A collarbone injury bothered him in college, and last year he tore his ACL late in the season. Peterson hasn't played in the preseason yet as he continues to rehab his knee, and it's also uncertain if he will be able to play in the season opener versus the Jacksonville Jaguars.
When healthy, Peterson is an elite fantasy player, and a lock for 1,000-plus rushing yards and 10 or more touchdowns.
However, coming off major knee surgery and playing on a team with a young quarterback should be a concern for fantasy owners.
Unless his status improves before your league's draft, don't even consider drafting Peterson. Find a safer option at running back.
Nicholas Goss is a Featured Columnist at Bleacher Report. Follow him on Twitter.