The NFL may not have known a lot about former Cahokia High School offensive tackle Terron Armstead before Saturday, but Armstead's introduction at the NFL combine in Indianapolis should keep teams coming back for more.

The 6-foot, 5-inch, 306-pound tackle wowed scouts and team executives by running the 40-yard dash in 4.71 seconds, the fastest time ever for an offensive lineman at the scouting combine. He was clocked at 4.65 seconds unofficially, but both times are almost unheard of for offensive linemen.

Armstead was a two-sport standout at Arkansas-Pine Bluff, earning All-American honors in track and field and all-Southwestern Athletic Conference honors in football.

A standout at the East-West Shrine Game, Armstead also finished first among linemen in the vertical jump (34.5 inches), tied for fourth in the broad jump (9-feet, 4-inches), tied for eighth in the bench press (31 reps of 225 pounds) and tied for 13th in the three-cone drill (7.62 seconds).

Armstead told reporters he wound up at Arkansas-Pine Bluff because he didn't get his ACT test score back until after signing day.

Armstead also said Arkansas-Pine Bluff allowed him to compete in both football and track and field, which was important to him.

His best distance in the shot put at Pine Bluff was 61-feet, 5-inches.

Armstead performed well enough at the East-West Shrine Game that he earned an invitation to the Senior Bowl.

"I've been blessed with a unique skill-set," Armstead told CBSSports.com. "I'm extremely light on my feet for a big guy, I have to say. It's a blessing. It was nothing that was coached.

"I just want to show them my athleticism, speed, quickness, be smooth, be fluid. I have some pretty good technique, but I know I need some work on every aspect of my game."