Jamaal Charles, Marshawn Lynch, Le'Veon Bell, Carlos Hyde and Arian Foster were all lost for a vast majority of the 2015 season. None of them can be considered disappointments. Instead, bad fortune turned their way. 

However, here are five fantasy running backs who saw extended action this season but failed to live up to expectations. 

1. DeMarco Murray, Philadelphia Eagles

Statistics: 702 rushing yards, 322 receiving yards, 1,024 total yards and seven touchdowns (140.40 points)

It's interesting that despite some major early-season struggles and Chip Kelly completely forgetting about his presence late in the year that Murray still finished as the 17th-best fantasy running back. 

Even then, that's a dramatic decline from a player that earned NFL's Offensive Player of the Year award after an awe-inspiring 2014 campaign with the Dallas Cowboys. Not only did Murray finish with the 27th-most rushing yards in the NFL, he averaged just 3.6 yards per attempt. 

Murray also failed to put up even average fantasy production in five of his starts and finished 21st among NFL running backs in fantasy consistency. All said, this veteran failed to hit the 10-point plateau in eight of the 15 games he appeared in. That's just plain horrible. 

2. Eddie Lacy, Green Bay Packers

Statistics: 758 rushing yards, 188 receiving yards, 946 total yards and five touchdowns (120.60 points)

Viewed as an obvious RB1 candidate heading into the 2015 season after finishing as the sixth-best fantasy running back in 2014, Lacy struggled through injury and a lack of production this past regular season. He finished with the 20th-most rushing yards en route to a substandard top-end FLEX performance in 2015. 

Overall, Lacy failed to reach the 100-yard plateau in all but two games this year, recording less than 30 rushing yards five times. He put up just one 20-point fantasy performance while accumulating less than 10 points nine times. Heck, Lacy finished as the 20th-most consistent fantasy running back. That's an absolute disaster for anyone who exhausted a first or second rounder on him. 

3. Melvin Gordon, San Diego Chargers

Statistics: 641 rushing yards, 192 receiving yards, 833 total yards and zero touchdowns (75.30 points)

Disastrous. That's pretty much the best way to define Gordon's rookie season. He failed to put up a touchdown on 217 touches throughout the year. In this, Gordon finished as the 53rd-best fantasy running back. To put that into perspective, he finished right ahead of Tim Hightower, who was out of the league since 2011 before playing eight games with the New Orleans Saints. 

When all was said and done, Gordon failed to put up a double-digit fantasy point outing in his 14 games, going for less than five points eight different times. For someone people had pegged as an obvious second-round pick (at worst), this was a downright failure. 

4. Alfred Morris, Washington Redskins

Statistics: 751 rushing yards, 55 receiving yards, 806 total yards and one touchdown

After tallying 1,000-plus rushing yards and a total of 28 touchdowns in his first three NFL seasons, Morris struggled to get it going in a running back by committee approach in Washington this year. 

In addition to averaging just 3.7 yards per rush, Morris failed to put up as much as 100 yards in all but two games this past season. During this very same span, he touched the ball 11 times or less in nine games. 

The good news here is that Morris will be a free agent when March comes calling. This will afford him the right to choose the best opportunity to see consistent touches. That's unlikely going to happen in Washington with Matt Jones in the mix. 

5. C.J. Anderson, Denver Broncos

Statistics: 720 rushing yards, 183 receiving yards, 903 total yards and five touchdowns

Considered a first-round lock in the preseason, Anderson struggled to mesh in Gary Kubiak's offense early on. He failed to put up more than 43 rushing yards in his first six games, tallying a total of 180 yards during that very same span. 

Overall, Anderson finished as the 30th-best fantasy running back. He ranked 33rd among running backs in fantasy consistency and failed to tally as much as 10 fantasy points 11 different times throughout the season. Ouch!