When it comes to professional athletes and their car collections, no one can beat heavyweight boxing champ Floyd Mayweather. He's not just the pound-for-pound best fighter in the world, he's the best car-for-car consumer on the road.

All totaled, Mayweather's garage is completely STACKED, with two Bugatti Veyrons, a Bugatti Gran Sport, two Ferrari 458 Spiders, a Lamborghini Aventador, a Porsche 911 Turbo S, and a Ferrari 599 GTB Fiorano.

Oh, and when your done marveling at those wheels, don't forget that Money May also has a private jet as well.

So Mayweather's the undisputed champ when it comes to this hobby. However, collecting hot rides isn't his purview alone. Here are some other professional athletes who sport some of the coolest cars around.

All photos courtesy of Athletes' Rides.