Buzzfeed: UFC 166 'Velasquez vs. Dos Santos 3' edition

Here is our first edition of Buzzfeed, as we take a look at all the things you need to know about UFC 166: "Velasquez vs. Dos Santos 3," which takes place tonight at Toyota Center in Houston, Texas.

No time for pleasantries ... let's go!:

Who: Cain Velasquez vs. Junior Dos Santos
What: UFC 166
When: Saturday, Oct. 19, 2013
Where: Toyota Center in Houston, Texas
Why it matters: The rubber match between champion Cain Velasquez and former champion Junior dos Santos will cap off the best Heavyweight trilogy in Ultimate Fighting Championship (UFC) history. And it does not necessarily mean that these two will never cross paths again. With talents like Velasquez and dos Santos having lengthily careers ahead of them, they could easily meet again going forward.

What's Hot:

-- The pay-per-view (PPV) main card features three heavyweight fights (one being for the division's championship), one pivotal Lightweight scrap and a Flyweight bout that is sure to open up the paid broadcast accordingly. With Velasquez, dos Santos, Daniel Cormier, Roy Nelson, Gabriel Gonzaga and Shawn Jordan on the main card, chances are it will be lights out for at least one of those men.

-- There will be a couple of prospects making their promotional debuts, including Darrell Montague, Bellator veteran Jessica Eye, Andre Fili and former Shooto champion Kyoji Horiguchi. Montague gets the main card treatment against Jon Dodson, while the others compete on the Facebook/YouTube "Prelims," with the exception of Eye who faces Kaufman on the Fox Sports 1 "Prelims."

-- There is a contest for every weight class in the company, minus the Light Heavyweight division. And ironically, both Cormier and Nelson seem destined for a drop down to 205 pounds after this fight.

What's Not:

-- Except for one bout involving Julie Kedzie and Germaine De Randamie, every fight in the women's Bantamweight division has been not only exciting, but one of the talking points on the following day. Getting to see Sarah Kaufman battle Eye on free television is great, yet this potential slugfest should have found a way on the main card somehow. Granted, the PPV portion is stacked although this division is without a doubt delivering thus far.

-- The fact that someone will definitely be cut after this event. All eyes are on K.J. Noons and George Sotiropoulos, who have both dropped three straight. One of those Lightweights will surely be looking for another promotion to work for if they are on the receiving end of a beating. Also trying to save his job is Dustin Pague, who has also lost his last three fights.

Hector Lombard and Nate Marquardt are both 1-2 in their last three bouts and should be able to escape the wrath of the brass if they respectively have a good performance. Lombard comes with a hefty price tag, while Marquardt could be slowing down having lost his past two fights in brutal fashion.

Original Card vs. Actual Card:

UFC 166 should be one hell of a doozy, and the injuries do not play too big of a factor in this event being stained:

-- An unfortunate and tragic accident saw Matt Grice being pulled from his fight with Jeremy Larsen, and was replaced by Charles Oliveira. The Brazilian was originally slotted in to face Estevan Payan, but the latter suffered an injury. Oliveira was then put in Grice's spot although he suffered an injury, which gave us Jeremy Larsen vs. Andre Fili.

-- Luke Rockhold was supposed to face Tim Boetsch but he suffered an injury and was replaced by C.B. Dollaway. Rockhold's presence headlining the "Prelims" would have been quite entertaining.

-- Finally, a fight between George Roop and Francisco Rivera was moved to UFC Fight Night 31 and was replaced by Sarah Kaufman vs. Jessica Eye on the Fox Sports 1 portion of the "Prelims."

How Do The "Prelims" Look:

-- Eight "Prelims" bouts feature former MMA champions Noons, Marquardt and Lombard; The Ultimate Fighter (TUF) veterans Sotiropoulos, Dollaway, and Anthony Ferguson; alongside promotional debutants and two women's bantamweight sluggers. In other words, this latest under card installment brings the heat.

The Facebook/YouTube "Prelims" contain T.J. Waldburger vs. Adlan Amagov, Tony Ferguson vs. Mike Rio, Jeremy Larsen vs. Andre Fili and Dustin Pague vs. Kyoji Horiguchi.

The Fox Sports 1 "Prelims" feature the main attraction, Tim Boetsch vs. C.B. Dollaway, along with Nate Marquardt vs. Hector Lombard, Sarah Kaufman vs. Jessica Eye and George Sotiropoulos vs. K.J. Noons.

Interest Level: 9/10

-- As previously mentioned before, this card is outstanding and we could be treated to an insane amount of great fights tonight. We also get to see if Velasquez can beat dos Santos twice, and vice versa, and every true fan will tune in to see how the Heavyweight championship fight turns out.

The only thing that was somewhat missing for this event was the worldwide mass appeal (and it may be too soon to even mention that without seeing the PPV buys or the hype the "Prelims" generate). With UFC's global expansion in full force and its world tours promoting UFC 167 and UFC 168, the interest is still there; however if it was not overshadowed by upcoming title fights that feature superstars such as Georges St. Pierre, Anderson Silva and Ronda Rousey, we may have gotten a little more in-depth coverage equally from the promotion and media outlets.

There was a Primetime show, and those three episodes gave us a look into the lives of both the champion and the challenger. Those always bring extra hype to the fights, and this installment of the program was quite good (to watch all three episodes click here).

This is a real stellar card from top-to-bottom, and hopefully we will see some memorable fights that could be significant in years to come.

MMAmania.com will provide LIVE round-by-round, blow by blow coverage of the entire UFC 166 event, 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.