11:55 a.m. - Alabama's pro day has concluded. Stay with TideNation for analysis and more player reaction. Thanks for joining us!
11:47 a.m. - Courtney Upshaw: "I wanted to run well. I heard a lot of negative stuff from my performance at Indy and I wanted to do better. I was focused on the 40-yard dash and wanted to be in the 4.7 range. I heard a lot of times and I'm happy with it." Note: Upshaw ran a 4.77 40-yard dash.
11:40 a.m. - Mark Barron: "I think it went pretty good. From all the feedback I got, people said I looked good. I'm OK with the performance I had today. I'm probably at about 80 or 90 percent."
11:31 a.m. - Trent Richardson: "There wasn't any pressure. It was fun. As far as being tired, I sweat all the time. I'm a sweater. I had a lot of fun today."
11:28 a.m. - Trent Richardson: "I'm 100 percent. I'm going to get better and better as the days go by. My 40-time, it was pretty good. I slipped a little bit at the start. I did pretty good overall."
11:13 a.m. - Courtney Upshaw is still working hard. He is going through some intense footwork drills at the moment. Scouts looking for how well he changes direction, and Upshaw appears to be performing well.
11:08 a.m. - Merril Hoge on site for pro day and says he has been impressive with Mark Barron's fluidness. Hoge also says is appears Trent Richardson answered all questions about his knee.
11:05 a.m. - It appears Trent Richardson's workout has ended. He is heading over to the media for interviews. Mark Barron and others continue to go through drills. It's safe to say scouts saw everything they wanted to on Richardson considering the amount of drills he went through.
10:58 a.m. - Safety Mark Barron, projected to be a top-15 pick, is going through coverage drills right now. The players are drenched in sweat and are really being put through the gauntlet.
10:54 a.m. - Courtney Upshaw and Mark Barron going through some individual drills now. Trent Richardson continues to perform drills. His stamina is certainly being tested. Richardson is catching passes out of the backfield now and hasn't dropped a ball.
10:51 a.m. - Nick Saban, being interviewed by the ESPN3 crew, was asked about Trent Richardson. "The procedure he had was very, very minor in nature and I think he is working out very well," Saban said.
10:48 a.m. - A few scouts grabbed some blocking pads for a drill to test Trent Richardson's blocking ability. Richardson knocked down one of the scouts. Everyone got a good laugh.
10:46 a.m. - The teams are putting Trent Richardson through drills that are specifically testing his knee. There are jumping drills that involve lateral movement.
10:44 a.m. - Here are some of Trent Richardson's measurements from Thursday: 5 foot 10, 227 pounds, wingspan of 74 inches.
10:42 a.m. - Trent Richardson is going through every drill he is being asked to do, and there are a lot of them. Most of the drills involve footwork and not speed or strength.
10:39 a.m. - To this point, Trent Richardson is performing well and not doing anything to hurt his status as a potential top-5 pick in the NFL draft.
10:36 a.m. - Trent Richardson performs the same drill again and does not knock over any cones.
10:35 a.m. - Trent Richardson doing some individual footwork drills with cones. He knocked over a few of them and wasn't pleased.
10:31 a.m. - Little bit of a break in the action here. Scouts and representatives are comparing their times.
10:29 a.m. - The 60-yard shuttle is beginning.
10:23 a.m. - CB Dre Kirkpatrick, as are most of the others, keeps knocking down the cones in the 3-cone drill. Kirkpatrick, however, just performed the drill again and was flawless.
10:20 a.m. - 3-cone drills taking place. Marquis Maze not very smooth in this drill. Courtney Upshaw just finished running it. No unofficial times just yet.
10:16 a.m. - This is the 20-yard shuttle run. Marquis Maze jumps in and runs well. No unofficial times yet on this portion of the workout.
10:14 a.m. - Shuttle run coming up.
10:11 a.m. - Courtney Upshaw also runs a second 40-yard dash and has an unofficial time of 4.81, the same time he had on his first run.
10:09 a.m. - Trent Richardson runs the 40-yard dash for a second time and has an unofficial time of 4.58. Richardson told ESPN he's at about 75-80 percent right now.
10:08 a.m. - Nick Saban talking with Dallas Cowboys head coach Jason Garrett and New England head coach Bill Belichick.
10:06 a.m. - Mark Barron runs an unofficial 40-yard dash time of 4.54.
10:04 a.m. - Trent Richardson's unofficial 40-yard dash time is in the 4.5 range. Courtney Upshaw's unofficial time was 4.81.
10:02 a.m. - Trent Richardson just ran the 40-yard dash. Times coming up shortly. Courtney Upshaw now lining up for the 40-yard dash.
9:52 a.m. - Rob Ryan and Nick Saban chatting before the start of indoor drills. Couple of defensive masterminds there.
9:46 a.m. - Overheard here that Trent Richardson and Courtney Upshaw will run today. Calculated risk as always.
9:42 a.m. - Former NFL wide receiver Cris Carter is here at Alabama's pro day.
9:40 a.m. - There's a representative from the Cleveland Browns here that could be interested in RB Trent Richardson at No. 4 in the first round.
9:35 a.m. - Looks like we're about to start.