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The NFL combine is underway in Indianapolis with 11 Alabama players participating.

A few hundred former college football stars will head to Indianapolis this week for the ultimate job interview. The NFL scouting combine can launch a career or raise major concerns.

Of the 300-plus who'll arrive at Lucas Oil Stadium, 11 played last season at Alabama. A few like Amari Copper and Landon Collins have little room to gain as projected top-10 picks. But a few teammates can do some serious work when on-field workouts begin Wednesday.

Here are five with the most to gain in Indianapolis:

RB T.J. Yeldon

A potential Heisman candidate before the 2014 season, Yeldon was slowed by a number of leg injuries. There was a hamstring pull early in the season, sprained ankle at LSU and another hamstring issue after that. For the first time in his three seasons, he didn't hit the 1,000-yard mark while rushing for 979 yards.

Entering the combine, Yeldon is the No. 5 running back in ESPN's positional ranking. The overall value of running backs has dipped in recent years and there are some solid players in this year's draft. Heisman runner-up Melvin Gordon tops the ESPN ranking followed by Georgia's Todd Gurley.

An NFL scout told NJ.com that Yeldon was "overrated" but "not bad." Yeldon can make a move if his ankle is fully healed and the burst is back.

OL Arie Kouandjio

There appears to be a variety of opinions for the former Tide left guard. He's the No. 6 guard in ESPN's rankings, but there are concerns. NFL.com's scouting report says he lacks athleticism and doesn't play well in space. An SEC defensive coordinator flat out called him "bad."

Kouandjio is highly intelligent and can impress scouts in the interview portion of the combine. On the field, he can take steps to show his athleticism isn't quite as bad as the anonymous scouts are saying. It will also be important to prove his early-career knee injuries won't be an issue moving forward.

QB Blake Sims

There are also a variety of opinions about Alabama's 2014 quarterback. Scouts liked his mobility at the Senior Bowl, but there were some accuracy issues. Fortunately for Sims, this is considered a top-heavy quarterback class. After Jameis Winston and Marcus Mariota, there doesn't appear to be many top-flight passers left.

ESPN ranks Sims 13th among quarterbacks in the draft while CBSSports slotted him No. 8, going in the sixth or seventh round.

With a good showing in passing drills, Sims has the opportunity to prove he can play quarterback in the NFL. He also said he was willing to look at a positional change to running back or slot receiver if quarterback doesn't pan out, but this will be a big week for his primary objective.

WR DeAndrew White

Though Alabama's second-biggest threat behind Cooper at receiver, White isn't receiving much buzz from the draft experts. Both ESPN and CBS ranked him 57th among receivers in the draft. According to his NFL.com draft profile, there are concerns about his break-away speed after his 2012 torn ACL.

He'll have some serious work to do proving he's among the elite in a draft class with high-end receiver talent. The 40-yard dash will be something to watch with scouts watching his initial burst.

LB Trey DePriest

A three-year starter in the middle of Alabama's defense, there's relatively little buzz for DePriest. His ability to match up and play in space is the concern for the 6-2, 250-pound linebacker. ESPN ranks him No. 10 among middle linebackers while CBS didn't have him in the top 46 it assessed.

DePreist is best playing between the tackles, but the NFL is played more on the edges in the modern era. Proving he can play in space with more consistency than he did at Alabama will be tremendous for a potential late-round pick like DePriest.