UFC 155 fight card primer: Junior dos Santos vs. Cain Velasquez

The rematch is finally here. Thirteen months after the 64-second knockout that turned the UFC heavyweight division upside down, the former champ gets his chance to regain his belt. And it will headline the last UFC pay per view of 2012. Junior dos Santos (16-1, 9-0 UFC) faces off with Cain Velasquez (10-1, 8-1 UFC)

It's pretty easy to figure out where these two rank at heavyweight on the Bloody Elbow Meta-Rankings. Junior is number one, Cain is number two. And it's pretty obvious how the rankings will look depending on the outcome as well - either they'll stay the same or flip-flop. This heavyweight UFC 155 title fight will be the main event of the night and will be shown pay-per-view. The PPV begins at 10 p.m. ET/7 p.m. PT.

How do these two stack up?

Dos Santos: 28 years old | 6'4" | 77" reach
Velasquez: 30 years old | 6'1" | 77" reach

What have these two done recently?

Dos Santos: W - Frank Mir (TKO) | W - Cain Velasquez (KO) | W - Shane Carwin (UD)
Velasquez: W - Antonio Silva (TKO) | L - Junior dos Santos (KO) | W - Brock Lesnar (TKO)

How did these two get here?

Junior "Cigano" dos Santos made a huge splash in the UFC with an uppercut KO of Fabricio Werdum back in 2008, and it's just been uphill ever since. Win after win over top heavyweights finally earned him a shot at the title at UFC on Fox 1 against Cain, and he knocked him out quickly. He was expected to defend against Alistair Overeem next, but a failed test meant that Frank Mir got the shot. JDS dusted him easily, and now Cain will get his rematch.

Cain Velasquez was just 2-0 when he entered the UFC, mostly because no one wanted to fight him. He proved why when he reeled off seven wins in a row, and took home the UFC heavyweight title when he stopped Brock Lesnar at UFC 121. He fought Dos Santos on a bad knee and got knocked out quickly, which was a huge loss (obviously). After being out for a while, he rebounded with a win over Antonio Silva and will now get a crack at getting his title back.

Why should you care?

It's a heavyweight title rematch between the two best big men in the world! You damn well better care!