Heisman Trophy winner Johnny Manziel will predictably be unpredictable

Ah, the life of the Heisman Trophy winner.

The Texas A&M quarterback has been on quite a ride since winning the little bronze statue, making more appearances than a Hollywood starlet.

“It's been fun,” he said. “It's something I never thought I'd get a chance to do.”

Before you get too excited, Sooner fans, I've got some bad news for you. As much as you might hope this craziness will affect his performance in the Cotton Bowl against the Sooners, it won't.

Granted, there have been plenty of Heisman winners who've struggled after winning the award. Since the turn of the century, just five Heisman winners have been bowl winners. Carson Palmer, Matt Leinart, Mark Ingram, Cam Newton and Robert Griffin III were the only ones to triumph in the bowl that followed their strike-a-pose moment.

Among those who fell victim to the curse?

Chris Weinke, Jason White and Sam Bradford.

The theory goes that Heisman winners are pulled in so many directions after the ceremony that their focus and their preparation suffer.

Looking at Manziel's schedule the past few weeks, and it's easy to see how that could happen.

In the days after the Heisman ceremony, he went on the talk show circuit. Highlights included reading David Letterman's Top Ten and going on The Tonight Show with Jay Leno.

A week or so later, he attended a Rockets game in Houston and was invited into the locker room afterward. He hammed it up with The Beard, both striking the Heisman pose for the camera.

Then came a Mavericks game and a meet-and-greet with LeBron, a Cowboys game with some sweet seats and a golf outing with two of the three Jonas Brothers.