This is the countdown video of UFC 159.
Jon Jones has the opportunity to tie the most consecutive light heavyweight title defenses this weekend by defending his title against Chael Sonnen.
The unlikely challenger talked his way into a title shot by accepting a bout with Jones on short notice to help save the event UFC 151. Jones declined to accept the bout and we are having the bout take place now.
The UFC countdown video helps explains what happened through this six month long rivalry.