Senior Bowl stock report

MOBILE, Ala. –- The first day of practices are in the books at the Reese’s Senior Bowl and there was plenty of action at both practices as some players definitely left a good impression while others still have some questions to answer.

Here is a look at players who improved their stock and some who struggled on the first day in front of NFL scouts and national media. This event is for seniors only, so underclassmen entering the draft are not participating. (List in alphabetical order)

RELATED: Sizing up Senior Bowl roster

QB Brandon Allen, Arkansas

There are some questions about Allen’s height and he had the smallest hands measured among the quarterbacks here, for whatever that’s worth, but the former four-star from Fayetteville, Ark., zips the ball, he spins it well and it hits the receiver right in the numbers. After a miss early in practice, Allen was probably the most consistent quarterback on the South team as he rifled the ball all over the field.

OC Graham Glasgow, Michigan

There seems to be some concern about Glasgow’s size playing center –- he measured in at 6-foot-6 3/10 -– but it was no issue at all on Day 1 as the Michigan center dominated the interior and didn’t lose a rep that we saw. The former walk-on anchors well, stays low, moves well and does just about everything an NFL team would want from an interior lineman.

DT Matt Ioannidis, Temple

Time and again, Ioannidis’ name entered the notebook because he kept winning reps, getting after it aggressively, using his 303 pounds to his advantage but also being super fast off the snap and getting into the backfield. The Temple standout was relentless and aggressive and showed off an excellent motor all practice.

WR Jay Lee, Baylor

Lee was third on the Baylor roster in catches this season, which is to say he put up strong numbers -– 758 receiving yards and eight touchdowns -– but didn’t blow anybody’s mind with his production. The former three-star from Allen, Texas, had a great day, though, as he caught a ton of passes, separated well from cornerbacks and used his size and strength to bully some lighter corners.

WR Braxton Miller, Ohio State

There might not be a single skill player at the Senior Bowl with Miller’s level of athleticism and finesse. He is so fast into his routes and he has the potential to be electric with the ball in his hands. Of course, the quarterback-turned WR is not a polished route runner and he still needs work in a lot of areas, but the former four-star QB from Huber Heights (Ohio) Wayne is so intriguing because with time he could be a lethal downfield threat.

CB Harlan Miller, SE Louisiana

Miller is one of those players from a small school who, if he continues to play this well, should move up a lot of draft boards. The 6-foot safety has good length, he’s physical and has a knack for sticking his hand in there to poke away passes. Miller, who had four interceptions this season, is fluid and breaks on the ball well, allowing him to make plays.

DE Carl Nassib, Penn State

Nassib dominated at times on Tuesday and proved he is one of the best defensive ends in this draft and that every one of his 15.5 sacks and six forced fumbles this season were warranted. He has tremendous size and length, he has a bunch of power and Nassib is really fast to the edge, too. A former walk-on with the Nittany Lions, there is a relentless to his game that is striking.

LB Reggie Ragland, Alabama

Ragland weighed in at 259 pounds and he doesn’t have the length to be an outside linebacker but the former top-rated inside linebacker covers so much ground and moves so well that he has proven to be a phenomenal athlete along with a big hitter. One play showed everything: A running back broke free through the secondary and Ragland came from his LB spot, hustled 30 yards down the field to make the stop. He can definitely move.

DT Sheldon Rankins, Louisville

Rankins was active and a menace to the interior linemen during drills because the former three-star from Covington (Ga.) Eastside simply does not stop. He fights off blocks, he uses his speed and gets skinny to slip through tiny holes in the line. Rankins has a really nice mix of power with athleticism that makes him tough to deal with.

DT D.J. Reader, Clemson

Reader weighed in at 340 pounds after being listed at 325 pounds, but the extra weight seems to have no negative effect on his performance. The former three-star from Greensboro (N.C.) Grimsley was gritty and tough in the middle but didn’t just plug holes. For someone his size, Reader can move and is surprisingly light on his feet.

OT Jason Spriggs, Indiana

Spriggs is a tick above 300 pounds but has maintained tremendous balance, athleticism and movement for someone his size –- and it looks like his body could even fill out a little more. The former three-star tight end from Elkhart (Ind.) Concord Community has nice length, too, so he can extend his arms and really dominate his opponent.

LB Eric Striker, Oklahoma

The thing that stands out most about Striker is his relentlessness on the field, his desire to make plays and then his ability to go do it. The former four-star from Seffner (Fla.) Armwood doesn’t just run around, he has a purpose to attack the football and then he has the speed and ability to get it done. Play after play, Striker was around the football ready to make the stop.

DT Adolphus Washington, Ohio State

Washington came in at 297 pounds and the extra weight seemed to have no negative effects at all. He was active, tough, fast and relentless all day, in all drills and he really stood out among a top-notch group of defensive linemen. There was nobody who could consistently stop Washington as he stopped the run, got in the backfield and caused havoc.

QB Carson Wentz, North Dakota State

Wentz may have had the best performance of any player on Tuesday. He was that sharp in front of all the scouts and the watchful eye of Dallas Cowboys coach Jason Garrett, who is coaching the North team. Wentz showed great footwork, balance, vision and most importantly, he was accurate on all his throws. Not only was he accurate, but Wentz zipped it with great pace and it popped off his hand. There were a few misthrows but all in all, Wentz had a very strong day.

OG Christian Westerman, Arizona State

Westerman's plus-strength was on full display as he anchored well and then did not move, kept his feet driving and dominated a lot of reps. There is not a lot of wasted motion, not a lot of happy feet from the former four-star from Chandler (Ariz.) Hamilton who transferred from Auburn. He is just a powerhouse who uses his strength and toughness to his advantage.

CB Tavon Young, Temple

Young is a hair taller than 5-foot-9, but he’s competitive and disruptive at cornerback and is someone who helped himself a lot on Day 1. He can high point the ball well, he uses his athleticism well and he’s always right around the ball when it’s thrown his way. At this point, at least, his lack of size has not held him back.

QB Jacob Coker, Alabama

To be fair, quarterback/receiver chemistry on Day 1 isn’t always there, but Coker is also mechanical in his delivery, the ball takes a long time to get out and he just didn’t show the same zip as some other quarterbacks. On an out route, Coker threw it well over the receiver’s head and that inconsistency is tough to handle at this level.

QB Jeff Driskel, Louisiana Tech

Driskel, who transferred from Florida, missed on a lot of deep passes, whether he was misjudging the speed of his receivers or simply just putting too much on it, some of his passes weren’t on target. The former four-star QB at least on two occasions had bad footwork where he kind of hopped into his throw.

OT Kyle Murphy, Stanford

Murphy had a mixed day. When Murphy had to power up and engage the defensive end straight on, then the former five-star from San Clemente, Calif., did well. But Murphy had issues handling speed rushers on the edge a few times.

DE Shawn Oakman, Baylor

There’s no getting around how great Oakman looks. Measuring in at 6-foot-7 4/10 and 269 pounds, he is a physical freak with tremendous upside. NFL teams will take one look at him and immediately become interested. But there are question marks, because Oakman was handled by a few offensive tackles and he sometimes wants to engage straight up with OL instead of getting to the edge or using an inside move.

OT John Theus, Georgia

Theus had a mixed day as well, taking down Oakman one occasion but then getting blown by another time. Like Murphy, Theus seems to be fine when mixing it up physically and he can anchor and take over that way, but when speed is coming his way there are some issues.