Watch UFC 166 weigh-ins LIVE at ProMMAnow.com starting at 5 p.m. ET

Time to hit the scales again. Today’s UFC 166 weigh-ins will go down ahead of tomorrow night’s huge pay-per-view event. Cain Velasquez will defend his heavyweight title against familiar foe Junior Dos Santos in the main event. Fellow heavyweights Roy Nelson and Daniel Cormier shouldn’t have to worry much about their weight as they both have trimmed down ahead of their bout.

ProMMAnow.com UFC 166 staff picks

UFC 166 Velasquez vs. Dos Santos goes down this Saturday at the Toyota Center in Houston Texas and features the third battle between UFC heavyweight champ Cain Velasquez and former champion Junior Dos Santos. In the co-main event undefeated Daniel Cormier meets heavy handed Roy Nelson. Our expert team has assembled to give you our thoughts on who wins and who loses.

UFC Primetime: Velasquez vs. Dos Santos III *Episode 3*

The third and final episode of UFC Primetime: Velasquez vs. Dos Santos aired on FOX Sports 1. The footage took us back to the first two matchups between Cain Velasquez and Junior dos Santos. Dos Santos won the first matchup in 64 seconds with Velasquez taking the rematch via dominant unanimous decision. Both fighters and their training camps spoke about the upcoming match and all the things they are doing to prepare each fighter for battle at UFC 166 on October 19 in Houston, Texas.

Countdown to UFC 166: Velasquez vs. Dos Santos III *Full Episode*

The UFC 166: Velasquez vs. Dos Santos III card is set to take place in Houston, Texas, on October 19, and will take place at the Toyota Center. The event will be headlined by the heavyweight trilogy between Cain Velasquez and Junior dos Santos with a heavyweight co-main event between Daniel Cormier and Roy Nelson. Also, lightweights Gilbert Melendez and Diego Sanchez will go to war on what should be a great night of fights. Check out the Countdown to UFC 166 episode below

Top thoughts and questions going into UFC 166: Velasquez vs. Dos Santos III

Cain Velasquez

The UFC166: Velasquez vs. Dos Santos III PPV is set to take place on Saturday, October 19, from the Toyota Center in Houston, Texas. It’s the rubbermatch between the two best heavyweights in MMA over the past 3 years or more. We take a look at some of the top thoughts and questions going into the event.

UFC 166: Velasquez vs. Dos Santos III extended video preview

The UFC 166: Velasquez vs. Dos Santos III card is set to take place in Houston, Texas, on October 19, and will take place at the Toyota Center. The event will be headlined by the heavyweight trilogy between Cain Velasquez and Junior dos Santos with a heavyweight co-main event between Daniel Cormier and Roy Nelson.

UFC Primetime: Velasquez vs. Dos Santos III *Episode 2*

The second episode of UFC Primetime: Velasquez vs. Dos Santos aired on FOX Sports 1. The footage took us back to the first two matchups between Cain Velasquez and Junior dos Santos. Dos Santos won the first matchup in 64 seconds with Velasquez taking the rematch via dominant unanimous decision. Both fighters and their training camps spoke about the upcoming match and all the things they are doing to prepare each fighter for battle at UFC 166 on October 19 in Houston, Texas.