The SEC is the best conference in the country, so it should come as no surprise that some of its stars shined during practices leading to Saturday’s Senior Bowl.

Here’s a look at five studs (and a dud) who possibly helped or hurt their NFL Draft stock the most.

Studs

1. Reggie Ragland, LB, Alabama: The knock on the physical Ragland is that he will be too slow to cover in space in the NFL and might be too small to stay in the middle.

NFL Network draft analyst Mike Mayock shot down such criticism.

“Reggie Ragland will be a top 20 pick and I see him as a starting middle linebacker in the NFL,” Mayock said.

Here’s what another former NFL scouting director told NFL.com

“He’s a throwback linebacker, but he’s going to get drafted in the first (round) because he has rush ability, too.”

Nick Saban told NFL.com that Ragland has a lot of diversity and showed that throughout the week.

Saban said Ragland started his career as an outside linebacker with pass rush skills before moving inside.

“I’m sure it intrigued, especially 3-4 people, to see him play outside, but I think the more diversity you have, the more value you have.”

Ragland won the award for most impressive linebacker this week.

2. Jerell Adams, TE, South Carolina: Adams didn’t have much help at South Carolina this season, with the quarterback carousel and coaching changes, but he flashed his potential in Mobile.

Pro Football Focus graded his Thursday workout particularly high, writing:

“This guy was making plays throughout Thursday’s practice, both in one-on-one drills and team drills. His teammates on the defensive side of the ball simply couldn’t cover him, and it was clear that the coaching staff was looking for ways to get him the ball — at one point, they ran a tight end screen for him. Don’t be surprised if he makes a lot of plays in the game on Saturday. The Gamecocks’ issues at quarterback limited his production in the passing game, but he still graded out very well as a run-blocker and his 10 forced missed tackles were evidence of his playmaking ability.”

3. Dak Prescott, QB, Mississippi State: The knocks are common, and most center on the system he ran in college and how in the NFL he’ll have to adjust to being under center, making full-field reads, etc.

ESPN’s Louis Riddick told Paul Finebaum that Prescott struggled Thursday.

“He’s transitioning to an offensive style here in the NFL that is much different that what he’s used to. … He struggled with the decision making process. He struggled with the ball placement and the accuracy.

Other observers came away far more impressed.

Denver Broncos writer Andrew Mason wrote that Prescott showed a surprising level of comfort in the pocket.

“Although he doesn’t fit the pro-style mold yet, Mississippi State quarterback Dak Prescott had a promising first day, and grew comfortable working under center and running play-action,” Mason wrote. “Prescott’s throws outside had plenty of velocity, and he displayed patience in the pocket, opting to rely more on his arm rather than his feet. His footwork when he throws also gives him a nice, easy delivery with plenty of zip.”

4. Malcolm Mitchell, WR, Georgia: Like Adams, Mitchell endured inconsistent QB play but it didn’t take him long to showcase his speeds and hands in Mobile.

Wrote Pro Football Focus:

“It just seemed as though Mitchell was quietly getting open on nearly every route he ran on Thursday, both in one-on-one and team drills. That reflected what he did on the field for the Bulldogs this season, despite having to deal with Georgia’s uneven quarterback play. He ranked 13th in our receiving grades among draft-eligible players.”

Duds

1. Jake Coker, QB, Alabama: Coker finished the 2015 season with the strongest games of his career, but he hasn’t been able to carry that momentum back to his hometown in Mobile.

Adam Hoge, a Chicago Bears insider, wrote this of Coker’s performance:

“On size alone, Coker looks like an NFL quarterback, but his delivery is really slow. The whole process from snap to release just takes too long and that’s going to hurt him at the next level. He’s just a guy.”

Riddick was quick to note, in discussing SEC QBs with Finebaum, that wet, cold conditions, new systems and new receivers typically do not equate to outstanding quarterback workouts.