NFL teams got a look at the 2013 crop of “DBU” as three former LSU defensive backs worked out Tuesday at the NFL Scouting Combine in Indianapolis, Ind.

Former LSU safety Eric Reid had the most impressive day of the three. Reid ran the fourth fastest 40 yard dash among safeties at 4.53 seconds. Reid also tied for the best vertical jump and the best broad jump among safeties.

According to nfl.com, Reid received a scouting grade of 87.5, which projects him to be an “immediate starter” at the next level.

Former Tiger cornerback and 2011 Heisman Trophy finalist Tyrann Mathieu also worked out on Tuesday. Mathieu ran a 4.5 second 40 yard dash and received a scouting grade of 73, which was No. 12 among corners.

Because of his troubled past, the interviews with NFL teams were just as important for Mathieu as the workouts.

“I think the interview process went well,” Mathieu told NFL.com. “I think I carried myself well and that is only going to take me further into the future.”

Former LSU cornerback Tharold Simon received a scouting grade of 70 after running a 4.51 second 40 and registering a 128 inch broad jump, the sixth best among corners.