VIDEO: Andy Ruiz Jr. Dominates World Heavyweight Champ Anthony Joshua With Stunning TKO

What in the WORLD did we just see? What on earth has just happened at Madison Square Garden? In unified world heavyweight champion Anthony Joshua's first-ever fight on US soil, Mexican-American challenger Andy Ruiz Jr. scored an absolutely shocking upset. After a vicious third round that saw knockdowns on both sides, Ruiz turned up the heat for good in Round 7 and put the undefeated titleist on the canvas again and again until the referee called a stop to the madness-- and sent the boxing universe into a confused frenzy.

Simply unbelievable. Depending on who you asked, AJ was something like a -2000 or -3000 favorite. He had never lost. He held three of the four major heavyweight belts.

And now, "Mexican Rocky" has claimed his scalp. And he did it in utterly dominating fashion.

Joshua looked tired early. Nonplussed. Less stoic than disengaged. Despite the fact that he cuts the image of a Greek statue and Ruiz appears as if he just walked out of Golden Corral, none of it mattered on the night. Under the lights at MSG, there was only one man with the heart and tenacity to win this title fight.

And the boxing world will have to take some time trying to figure out just what the hell happened here.