Though last night's fight only lasted two rounds, we learned a lot about him. He faced the best heavyweight in the world, but came up short.
Here are five things we learned about Frank Mir last night.
At this point in his career, primarily after last night, it appears Frank Mir will never win the UFC title ever again. He gave everything he had against Junior dos Santos, but was completely outclassed.
The former title holder failed last night in the UFC title fight, he lost against Shane Carwin for the interim strap at UFC 111 and lost in his title unification bout against Brock Lesnar. That is three straight title attempts that he has failed in, and last night was probably his last attempt.
Luckily, this will not tarnish his legacy as one of the best heavyweights of all time.
Frank Mir has definitely improved his striking, but his striking defense is still suspect. This has been seen in Mir's last two fights, especially last night as he was dropped on several occasions.
Against Antonio Rodrigo Nogueira, Mir was dropped and almost finished before he pulled the miraculous comeback submission on "Big Nog." The kimura was one of the best submission wins of all time, but the fact that he defended Nogueira's punches with his face is troubling.
He needs to improve his striking defense or else we could see Mir on the receiving end of more knockouts.
Look at the methods in which Frank Mir lost. He was been knocked out by Junior dos Santos, Shane Carwin, Brock Lesnar, Brandon Vera, Marcio Cruz and Ian Freeman.
Yes, of Frank Mir's six losses, all have come via knockout.
Freeman and dos Santos are a great boxers, Vera possesses solid Muay Thai techniques and Carwin and Lesnar have sickening power in their hands. This shows that most of Mir's losses have come to guys that have better striking, whether it is ground striking or traditional on-the-feet striking.
Very rarely has Mir been outgunned in a submission match, again signifying his troubles with power strikers.
Nine of Frank Mir's 16 wins have come by submission. This is no coincidence, as he is one of the greatest submission artists off all-time.
But, to be successful in MMA, Mir has to stick to his ground game to win. Striking has proven to be more of a challenge to Mir, as proven last night against Junior dos Santos.
Mir has improved on the feet, but undoubtedly, he is one of the best ground workers. If he wants to get back to his winning ways, he should stick to engaging on the ground.
If there is one thing I can say about Frank Mir, it's that he is tough as nails. There were a couple points in the first round where he looked like he was done, but he stuck in there and kept fighting.
Battered and bruised, Mir came out in the second round looking to win the fight. It obviously didn't happen, but even as the fight was being stopped, he was still trying to defend himself.
Yes, he lost last night, but he showed us he is as tough as they come.