Beating Vitor Belfort makes Chris Weidman pound-for-pound best UFC fighter on the planet

How impressed is Dana White with Vitor Belfort?

Enough that if Chris Weidman is able to retain his middleweight championship and defeat "The Phenom" later this year, the "All American" -- according to the UFC President -- becomes the number one ranked pound-for-pound fighter in the world.

Of course, it helps to have back-to-back wins over former kingpin Anderson Silva.

"This is a big fight. If you look at the guy, he's undefeated and he beat Anderson Silva twice. Now he's going in to face Vitor Belfort. Very interesting fight. He's the best [if he beats Belfort]. How is he not number one in the world if he beats Vitor Belfort? It's impossible not to call him number one pound-for-pound guy. If he beats Vitor? Fucking Barao is number two!"

UFC bantamweight champion Renan Barao is currently White's pick for world's best (see his explanation here).

Belfort earned his second shot at the 185-pound strap with three stunning knockout victories over Michael Bisping, Luke Rockhold and Dan Henderson and now has the opportunity (in either May or July) to claim his third belt in as many weight classes.

But if Weidman beats Belfort and becomes the best in the world, where does Vitor end up with a win over the champ?

See the current pound-for-pound rankings here.