Tristan Wirfs runs an official 4.85 second 40-yard dash 

Fresno State Bulldogs linebacker Mykal Walker runs an official 4.65 second 40-yard dash at the 2020 NFL Scouting Combine.

Portland State tight end Charlie Taumoepeau runs unofficial 4.75 second 40-yard dash at 2020 combine.

Watch a breakdown of Purdue tight end Brycen Hopkins' college highlights.

Watch the best moments from the wide receivers during the 2020 NFL Scouting Combine.

Watch the best moments from the quarterbacks at the 2020 NFL Scouting Combine.

Watch the best moments from the linebackers at the 2020 NFL Scouting Combine.

Watch the best of the offensive linemen during the 2020 NFL Scouting Combine.

Watch the best moments from the running backs at the 2020 NFL Scouting Combine.

Watch the best workouts from the defensive back group at the 2020 NFL Scouting Combine.

Watch the best moments from the defensive line at the 2020 NFL Scouting Combine.

Check out the fastest and slowest 40-yard dashes from the 2020 NFL Combine.

Clemson Tigers linebacker Isaiah Simmons' 2020 NFL Scouting Combine workout.

NFL Network's Maurice Jones-Drew lists most impressive running backs from 2020 NFL Scouting Combine.

Boise State Broncos offensive lineman Ezra Cleveland's 2020 NFL Scouting Combine workout.

Wisconsin Badgers linebacker Zack Baun's 2020 NFL Scouting Combine workout.

NFL Network's Bucky Brooks reveals his biggest surprises from the 2020 NFL Scouting Combine.

Watch Michigan Wolverines wide receiver Donovan Peoples-Jones' 2020 NFL Scouting Combine workout.

NFL Network's Charley Casserly breaks down his in-person impressions of 2020 NFL Scouting Combine wide receivers.

NFL Network's Lance Zierlein identifies three players trending down after the 2020 NFL Scouting Combine.

NFL Network's Lance Zierlein reveals three players on the rise after strong performances at the 2020 NFL Scouting Combine.

NFL Network's Charley Casserly shares his quarterback takeaways from the 2020 NFL Scouting Combine.

Alabama Crimson Tide wide receiver Henry Ruggs III's 2020 NFL Scouting Combine workout.

Clemson Tigers defensive back A.J. Terrell's 2020 NFL Scouting Combine workout.

LSU Tigers defensive back Kristian Fulton's 2020 NFL Scouting Combine workout.

NFL Network's Michael Robinson and DeAngelo Hall recap the 2020 NFL Scouting Combine workout from Ohio State cornerback Jeff Okudah.