NFL's Antonio Brown -- Faster Than Usain Bolt? ... It Depends.

Antonio Brown is fast. Really fast. But could he outrun Usain Bolt?

Maybe.

It all depends on which race.

The Pittsburgh Steelers wide receiver is out in L.A. -- so we asked how he'd do against the fastest man in the history of planet Earth.

Brown knows he'd get rocked in the 200 ... and probably the 100.

But 10 meter dash? It's ALL AB!!!