University of Louisville quarterback Lamar Jackson once again opted against running the 40-yard dash during the Cardinals' pro day Thursday at the Trager Center in Kentucky.

Jackson, one of the top prospects in a loaded QB draft class, also skipped the speed showcase during the 2018 NFL Scouting Combine in Indianapolis. He didn't take part in any of the athletic testing in either of the pre-draft events despite his well-rounded skill set. 

The 2016 Heisman Trophy winner took part in positional drills, giving scouts another chance to see him run scripted plays in a controlled atmosphere. While some dropped passes hurt the optics of his performance, he displayed solid rhythm on short and intermediate routes and made some nice throws on the run.

Here's a look at some of his pro day (via the NFL):

Jackson was quick to shoot down speculation at the combine about teams potentially asking him to switch to wide receiver at the pro level. He reiterated he's only interested in getting drafted by organizations willing to let him remain a QB.

"That's crazy," Jackson told reporters about possibly changing positions. "I thought I did a good job at quarterback. I thought I did. You know? But, hey, they say what they want to say. I'm here now. I'm happy to be here. Now I just have to show my ability."

All of that talk did have an impact on his decision-making process, though. He discussed the choice to skip the 40-yard dash at the combine with the NFL Network, per Jordan Heck of the Sporting News.

"I didn't want to show it out here; they've been talking about receiver and stuff like that, so I didn't feel I should do it," Jackson said. "At first I was going to run, as a quarterback, but then they said 'wide receiver' and I had to let them know I was just going to throw today."

His mindset was likely the same for Thursday's activities.

Albert Breer of The MMQB commented on the decision:

Bleacher Report's Ian Kenyon believes it could have an impact on Jackson's stock:

His execution of the plays during the on-field session was solid, albeit unspectacular. It's impossible to fault him for wide receivers who couldn't make grabs. When he did miss, it was usually high, including a couple throws down the middle of the field.

Daryl Ruiter of 92.3 The Fan in Cleveland summed up the effort:

Marty Smith of ESPN spotlighted a footwork drill in the red zone:

Jake Lourim of the Courier Journal provided a few more highlights:

All told, deciding not to put his biggest strengths on display is a curious decision. While it's understandable Jackson wants to stick at quarterback, his ability to make plays with his legs and his arm is what makes him a potential first-round selection.

His chances of landing inside the top 10 have seemingly faded during the draft process. The Buffalo Bills, who own picks No. 12 and No. 22, and the Arizona Cardinals, at No. 15, are potential landing spots if he lands somewhere in the middle of Round 1.