Football has a caste system, and it has always been honest about it. The stars go to the big schools. The rest are told to wait, to prove it, to be grateful for a look.

Jalen Mayo spent years being told to prove it.

He did it at Virginia Union, in Division II, where the lights are low and the crowds are small and nobody is scouting the kid in the secondary. He did it again at Stephen F. Austin, in the FCS. And this fall, at 22 games’ worth of patience and one last chance to go bigger, he walked into the Big 12 as a fifth-year corner from Hampton, Va., and quietly became the best at his position in the league.

On Tuesday, the nation noticed. Mayo was named one of 15 semifinalists for the Paycom Jim Thorpe Award, given to the best defensive back in college football. It is a list full of players who were supposed to be here. Mayo is the one who had to talk his way in.

The Big 12 gave him no honeymoon. Before the season, PFF had him as the top-graded returning corner in the conference at 90.3, a number that turns a newcomer into a target. Every quarterback in the league was going to look his way. Seven games in, 253 passing plays have tested him, and his 78.5 coverage grade is still the best of any defensive back in the Big 12.

Think about what that means. Offenses have spent a season picking on him, and the grade says they have mostly lost.

Look at how he does it. Six pass breakups say he is not merely chasing receivers, he is arriving at the catch point with his hands ready. Twenty-nine tackles, third most on the Cougars, say he is not a corner who disappears when the ball goes the other way. And then there is the interception at Texas Tech, a one-handed grab that looked like a man who had been waiting his whole career for somebody to throw it to him.

That play is the whole story in one snatch. Mayo does not look surprised to be here. He looks like he has been planning it.

That is what a trusted corner gives a defense. Houston can send pressure because the back end is not a worry. Safeties can sit on the run. The whole unit plays faster when it knows one side of the field is handled. You cannot always see that on a stat sheet. You can see it in how aggressively a defense is willing to play.

The Thorpe list will be cut again before the season is out, and the other names on it are nothing to wave off. Georgia’s KJ Bolden, Notre Dame’s Leonard Moore, Clemson’s Ashton Hampton, and Kentucky’s Jordan Castell. Ten of the 15 are safeties, which makes the five corners an elite club inside an elite club. Only two players on the list come from Texas and the Big 12: Mayo and Texas Tech’s Brice Pollock.

The award is named for Jim Thorpe, who ran, passed, kicked, played defensive back and won Olympic gold in the decathlon and pentathlon. Thorpe never accepted being only one thing. It is a fitting name for a trophy that now has a Division II kid on its watch list.Mayo has played one season at this level, and the verdict is already in. He did not need the sport to hand him a place. He took one.

Houston gets Cincinnati at TDECU on Nov. 7 after its bye. Mayo gets what he has earned every step of the way, which is the next rep, the next quarterback, and the next chance to answer anyone who still thinks he is a story instead of a star.

He is both. Give him the ball and he will tell you himself.