UFC Champ Jon 'Bones' Jones Pleads Guilty to DUI

UFC Light Heavyweight champ Jon "Bones" Jones just pled guilty to DUI -- after his boozy arrest last week in upstate New York.

TMZ broke the story, the 24-year-old was popped in Binghamton May 19th after crashing his Bentley into a pole, totaling the car.

Jones posted an apologetic message on his Facebook after the arrest, writing, "I screwed up, big time." The message was subsequently deleted (shocker).

A rep for the Broome County D.A.'s office tells TMZ, Jones refused a breathalyzer at the time of his arrest, but admitted he had been drinking.