The new wave of light heavyweight took on a powerful veteran in the final fight of the UFC 133 undercard which were aired live on Spike TV.
After a very close first round that saw little action and both men cut each other, the Swedish fighter turned up the heat in the second round and began to really hurt "The Hammer" with his range and aggression.
Midway through the second round, he landed a big combination that staggered Hamill and sent The Ultimate Fighter season three alumni to the canvas.
Refusing to be denied a finish, Gustafsson pounced and proceeded to unleash a huge assault of strikes that hurt the veteran wrestler. When Hamill gave up the full mount and continued to eat a large amount of ground and pound, the referee had seen enough and put a halt to the action.
This was a huge win for the Swedish prospect and should set him up to take it to the next level in the light heavyweight division.
Are you excited about Gustafsson's future? What happens to Hamill now?