The last time Henderson was in a UFC fight, he beat Michael Bisping by a knockout. The knockout, which you can see here, was named Knockout of the Year in 2009.
After a brief stink in Strikeforce, Henderson returns tonight.
Rua made his UFC debut in September 2007. Since then, he has recorded only seven fights in the UFC.
He boasts a record of just 4-3, but all seven fights have come against top talent in the UFC.
Rua has taken on Forrest Griffin, Mark Coleman, Chuck Liddell, Lyoto Machida and Jon Jones.
He took the UFC light heavyweight title from Machida, but lost it in his following fight against current champion Jones.
Rua may not have fought often in the last few years, but when he has it's been against the premier talent in the organization.
Never in his career has Henderson faced anybody at this level and won.
He was dominated by Quentin "Rampage" Jackson and Anderson Silva during his previous time in UFC.
Rua fought Jackson once early in his career. He ended the fight in the first round by knockout.
Tonight, Rua will simply be the more talented fighter in the ring.
No matter how it ends, it should be a clear victory for Rua.