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A closer look at RB draft prospects

In need of an every-down running back, should they let Ryan Mathews go in free agency, the San Diego Chargers picked a good year to find one in this year’s draft.

“You can get those guys pretty much at any point in the draft that you want because there’s such great depth this year at the running back position,” ESPN NFL draft analyst Mel Kiper Jr. said, “Every year you can find them. You can get a guy like Javorius 'Buck' Allen from USC in the third or fourth round. I think even a T.J. Yeldon from Alabama drops down into the fifth or sixth round. Terrell Watson of Azusa Pacific will be a nice, late-round pick, as will Cameron Artis-Payne from Auburn. Mike Davis of South Carolina might be a late-round pick. So you can find running backs.”

Among those players suggested by Kiper, the Chargers need to find a workhorse thumper who can grind out yards between the tackles. Here are a handful of options the Chargers could be targeting in this year’s draft.

Click here for an updated list of all the measurables for the running back draft prospects.

Melvin Gordon, Wisconsin: At 6-foot-1 and 215 pounds, Gordon is deservedly considered the top running back prospect in this year’s draft. He put up video-game numbers in his final season at Wisconsin, rushing for an NCAA-record 408 yards against Nebraska, finishing with 4,915 rushing yards and averaging 7.8 yards per carry during his career with the Badgers. Gordon backed up those numbers with a solid workout at the scouting combine. You’d like to see a little more top-end speed, but a 4.52-second time in the 40-yard dash is fast enough. The only question about Gordon is his pass-catching and pass-protection ability on third down. Gordon is a true home run threat who could serve as an every-down back for the Chargers.

Jay Ajayi, Boise State: The Texas native finished with 3,796 rushing yards and 55 total touchdowns during his career for the Broncos, averaging 5.6 yards per carry. A tough, between-the-tackles runner, Ajayi compares himself to Marshawn Lynch because of his willingness to fight for every yard. At 6-foot and 221 pounds, Ajayi ran a 4.57-second time in the 40-yard dash and posted a 39-inch vertical jump. He’s also a good receiver, finishing with 50 receptions for 535 yards in his final season at Boise State.

Tevin Coleman, Indiana: At 5-11 and 206 pounds, Coleman rushed for a school-record 2,036 yards and 15 touchdowns, averaging 7.5 yards per carry. Half of Coleman’s 28 career touchdowns gained 40-plus yards. Coleman also showed toughness, playing half of the season with a broken toe. He did not participate in on-field workouts at the scouting combine because of the injury, but pushed up 225 pounds 25 times on the bench press. Coleman is a one-cut, downhill runner with outstanding burst once he gets to the second level of the defense.

Duke Johnson, Miami: At 5-9 and 207 pounds, Johnson is electric when he gets into the open field. He finished with 1,652 yards and 10 rushing touchdowns in his final season at Miami, averaging 6.8 yards per carry. Johnson also caught 38 passes for 421 yards and three receiving touchdowns in 2014. Johnson’s 4.54 in the 40 was a bit disappointing, considering how fast he plays on film. But his production, vision and ability to make defenders miss clearly translates to the next level.

Buck Allen, USC: At 6-foot and 221 pounds, Allen is physical enough to serve as a workhorse running back in the NFL. And he’s fast enough, running a 4.53 in the 40 at the combine -- good speed for his size. Allen finished with 1,489 rushing yards and 11 touchdowns in his final season with the Trojans. He also totaled 41 receptions for 458 yards and a receiving touchdown, so he can contribute in the passing game. Allen has good feet and short-area quickness for a bigger back.

David Johnson, Northern Iowa: At 6-1 and 224 pounds, Johnson is an easy strider with good, long speed once he reaches the open field. Johnson ran the 40 in 4.50 seconds at the scouting combine, so the speed is there. He finished with 1,553 rushing yards and 15 touchdowns in his final season at Northern Iowa, so the production is there. Johnson also totaled 38 receptions for 536 yards and two receiving touchdowns, so he has some ability as a third-down back as well. Johnson could be a mid-to-late-round sleeper for the Chargers if they are looking for running back depth later in the draft.