The NFL combine is underway with the Broncos taking a closer look at linebackers.

Defensive linemen and LBs participated in drills Thursday at Lucas Oil Stadium in Indianapolis. The Broncos are likely to invest draft capital at linebacker with Alex Singleton and Justin Strand approaching free agency. Here is a closer look at how the top draft-eligible LBs performed in key testing.

Top 40-yard dash times

Sonny Styles (Ohio State): 4.46 seconds

Kaleb Elarms-Orr (TCU): 4.47 seconds

Anthony Hill Jr. (Texas): 4.51 seconds

Kyle Louis (Pittsburgh) and Namdi Obiazor (TCU): 4.53 seconds

Top vertical jumps

Sonny Styles (Ohio State): 43.5 inches

Kaleb Elarms-Orr (TCU) and Karson Sharar (Iowa): 40 inches

Kyle Louis (Pittsburgh) and Jake Golday (Cincinnati): 39.5 inches

Top broad jumps

Sonny Styles (Ohio State): 11 feet, 2 inches

Kyle Louis (Pittsburgh): 10 feet, 9 inches

Jake Golday (Cincinnati), Anthony Hill Jr. (Texas), Justin Jefferson (Alabama) and Jack Kelly (BYU): 10 feet, 5 inches