Let's just say it did not end well for the champion (watch it unfold here).
"Cigano" took over as 265-pound kingpin and beat the brakes off Frank Mir in a lopsided title fight the following May. Keeping pace with the Brazilian was Velasquez, who also violently disposed of his next challenger, Antonio Silva, at the same event.
When they did the dance for a second time at UFC 155 last December, it was Velasquez who emerged the victor, following a five-round drubbing that left Dos Santos a bloody mess (pic). These two were -- and likely still are -- the two best heavyweight fighters in all of mixed martial arts (MMA), so it's no surprise to see them fighting for the third time in just over two years.
See them square off at yesterday's media day here.
Their epic trilogy comes to a head in the main event of this Saturday night's (Oct. 19, 2013) UFC 166: "Velasquez vs. Dos Santos 3" pay-per-view (PPV) event, which is less than 24 hours away from blowing the roof off the Toyota Center in Hosuton, Texas.
How will their rubber match end? Find out in our UFC 166 predictions post right here.
MMAmania.com will provide LIVE round-by-round, blow-by-blow coverage of the entire UFC 166 event on fight night, starting with the Facebook "Prelims," which are scheduled to begin at 6 p.m. ET, right on through the FOX Sports 1-televised under card bouts at 8 p.m. ET and then main card PPV action, which is slated to begin at 10 p.m. ET.