East Carolina’s Chris Johnson ran a 4.24 40-yard dash in the 2008 NFL Combine.

Nobody’s caught him yet … and if you believe several published rankings of college football’s fastest players, nobody in the SEC will catch him at this week’s NFL Combine in Indianapolis. Based on AL.com’s preseason speed rankings, the SEC’s 10 fastest players in 2015 aren’t even at the Combine.

The Sporting News ranked South Carolina receiver Pharoh Cooper the sixth-fastest player heading to Indy but didn’t provide a time in its explanation. Walterfootball.com did: 4.47.

He’s certainly worth watching.

Here are five more to watch (assuming you can spare 4.5 or so seconds).

Keith Marshall, Georgia

There are many tales of Marshall ripping off 4.3s in the 40. MaxPreps reported Marshall once ran a 4.25 in high school.

NFLdraftscout.com credits Marshall with a low of 4.40.

Marshall was a 100-meter champion in high school, so form and firing off the block won’t be an issue. You can see that below as he got the jump on Malcolm Mitchell.

In its scouting report of Marshall, NFL.com wrote that Marshall “doesn’t look as fast as before his 2013 ACL tear.”

We’ll soon find out.

Kenyan Drake, RB, Alabama

AL.com reported Drake ran a 4.4 during Alabama’s pro day events last offseason, and that was just five months after breaking his leg against Ole Miss.

He’s the fastest Tide player in Indy this week, and like most Combine participants, he’s been training for the 40.

Ricardo Louis, WR, Auburn

Louis’ career has been defined by big plays, jet sweeps, going deep and, of course, the Prayer at Jordan-Hare.

Speed is his wipeout weapon.

NFLdraftscout.com recorded his fastest 40 at 4.37 seconds.

Will Redmond, CB, Mississippi State

Before the season — and before tearing his ACL — Redmond was viewed as a potential first-round draft pick.

He tore his ACL in October.

It’s unclear whether he’ll participate in the speed and agility drills, but he reportedly ran a 4.38 last August, which helped launch his first-round hype.

Vernon Hargreaves III, CB, Florida

The stopwatches can’t agree on Hargreaves, but the 40 could be his most important event in Indianapolis as he duels FSU’s Jalen Ramsey to become the first defensive back drafted.

Some reports suggest Hargreaves lacks top-end speed.

Hailfloridahail.com reported he has run a 4.38.

The truth no doubt is somewhere in between … and will be determined in the 4.5 or so seconds it takes Hargreaves to cross the finish line.