Video: Watch UFC 166 headliner Junior dos Santos crush Fabricio Werdum

Do you remember Junior Dos Santos‘ UFC debut?

He certainly does. But Fabricio Werdum might not. Or at least, he probably wants to forget about it.

That’s because dos Santos, relatively unknown when he debuted at UFC 90 in 2008, came in a big underdog and turned out Werdum’s lights with a massive right uppercut in the first round.

Dos Santos (16-2 MMA, 10-1 UFC) on Saturday tries to recapture the heavyweight title when he meets champion Cain Velasquez (12-1 MMA, 10-1 UFC) in the main event of UFC 166, which takes place at Toyota Center in Houston.

Check out the video above, then don’t miss UFC 166 on pay-per-view on Saturday.

For more on UFC 166, stay tuned to the UFC Rumors section of the site.