On Tuesday, the defensive backs finished up the Combine in Indianapolis.

Here are some things we learned:

• Dee Milliner is fast. The Alabama corner likely solidified a top 10 spot with a 4.37 time in the 40. It was the second best time from a defensive back.

It seems like Milliner will be the first corner taken and could go as high as fifth to the Lions, who desperately need some help in the secondary.

• If Milliner is the first corner, who is the first safety? Well, Kenny Vaccaro didn't exactly help him. The safety from Texas ran a 4.63 but is still likely to be the first safety taken.

• If Vaccaro isn't the first safety taken, it might be Matt Elam. Elam, from Florida ran a 4.54, which is pretty solid. NFL Network's Mike Mayock compared Elam to Pro Bowl safety Donte Whitner from the 49ers.

• Tyrann Mathieu finally helped himself at the Combine. After benching 225 pounds just four times, he put forth a solid 4.50 40 time, which should make him draftable.

• Cal's Steve Williams might have given Chris Johnson a brief wakeup call on Tuesday. Johnson holds the Combine record with a 4.24 40 time and Williams was unofficially clocked at 4.25. But it ended up being a 4.42.

• The fastest 40 time from a defensive back went to Mississippi State corner Darius Slay, who ran a 4.36. Wideout Marquise Goodwin's 4.27 was the fastest overall 40 time of this year's Combine.