Christian Hackenberg shined while completing drills at the Penn State Pro Day on Thursday. Since we last saw him at the TaxSlayer Bowl, the three-year starter has been working with Jordan Palmer to refine his quarterback skills. It appears that the work has served him well.

Here is a view of Hackenberg's throwing session on periscope. Unfortunately it appears that the periscope was slightly under water when the footage was recorded. While the video is a little choppy it still shows the command that Hack displayed as well as his improved footwork.

Palmer discussed the workout and challenges that Hackenberg needs to overcome.

Hackenberg released this instagram in lieu of giving a post-workout interview. In it he included this statement.

Great experience. Thank you to all the teams that showed up to watch all of us today. Most importantly, a big shout out to @jwpalms for being there through thick and thin. We knew we had some work to do, and could not be more pleased with the results. On to the next one bro.

Other former Penn State players took part in the workout as well. Carl Nassib, Austin Johnson and Anthony Zettel performed in positional workouts but like Hackenberg did not retest the skills previously measured at the NFL Combine. Jordan Lucas, Ryan Keiser, Trevor Williams, Angelo Mangiro, Kyle Carter, Tarow Barney, Dom Salomone, Jon Gingrich and Brandon Johnson also took part in the workout and did the individual tests such as the 40-yard dash, the shuttle run and vertical leap. Here is what Mangiro, Nassib and Lucas had to say about the workout.

Video from Penn State Football Pro Day. Christian Hackenberg throws for @NFL scouts @GoPSUsports https://t.co/PRyJA9wpBo

— Nabil K. Mark (@NabilKMark) March 17, 2016

Trevor Williams ran a brisk 40 yard dash with a time of 4.43. Walk-on Brandon Johnson wowed those watching when he displayed his 39 inch vertical leaping ability. It was a solid day for the players that participated. With just six weeks remaining before the NFL draft, this will be the final chance for many of the players to show off their skills to the 31 teams that sent scouts to the workout. Only the Atlanta Falcons chose not to send a representative to the workout.