UFC heavyweight champion Cain Velasquez's anticipated return to the octagon lasted merely 64 seconds.
In the UFC's network debut on Fox, top contender Junior Dos Santos landed a massive overhand right and followed up with ground strikes to stop Velasquez at 1:04 of the very first round.
If anything, fans learned that Velasquez is human.
The former NCAA Division I wrestler hadn't fought in over a year since dethroning former heavyweight champion Brock Lesnar.
Before the injury, Velasquez tore through the heavyweight ranks, dispatching of notables like Lesnar, Antonio Rodrigo Nogueira, Ben Rothwell and Cheick Kongo.
His everlasting gas tank and otherworldly wrestling allowed him to control and dominate upper-echelon opposition in a flawless manner.
Against Dos Santos, Velasquez ran into perhaps the best striker in the entire division and the No. 2 heavyweight in the world.
"I just want to say sorry to all my fans, family and friends that I disappointed you. I'm much more than this. I will be back. I will get that belt back," Velasquez said in his post-fight interview with UFC commentator Joe Rogan.
"He kind of messed up my equilibrium. He hit me with a good shot. He has a lot of power. I waited too much for him. He went in and did what he was supposed to do, so my hat is off to him tonight."
With a fighter of Velasquez's caliber, there aren't any hidden reasons or questions of what went wrong.
He simply got caught by a world class striker. The same has happened to just about every legend of the sport.
Dos Santos has even endured the bitter taste of defeat in November 2007, when a mistake on the ground cost him a first round submission loss to Joaquim Ferreira.
No man is impervious to defeat, especially in such an unpredictable sport like MMA.
Velasquez is one of the hardest working fighters in the world, and with a win or two, he'll be right back in the heavyweight title mix.
Be sure to stay tuned to Bleacher Report for all things UFC on FOX. B/R is your home for post-fight analysis of the Cain Velasquez vs. Junior dos Santos fight card. Also, be sure to check out our fight card hub page for news and opinion on the entire UFC on FOX fight card.