BJ Penn vs. Joe Stevenson

The fight was for the vacant UFC lightweight championship.
The first round was dominantly Penn's, as he dropped Stevenson mere seconds into the fight with a beautiful uppercut combination and followed him to the ground. Penn controlled the fight there, passing Stevenson's guard at will. Stevenson managed to regain guard multiple times against the crafty Penn, showing his own ground savviness. Near the end of the round, Penn landed an elbow to the forehead that opened a wide gash on Stevenson. The round continued and at the end of the round, a doctor was brought in to check the cut. The fight was allowed to go on.
The second round was a bit different. Stevenson stayed fast and elusive, moving in and out and holding his own boxing with Penn who wasn't too shabby on the feet either. Penn eventually staggered Stevenson with a combination and got the takedown, taking his back and mounting alternately for a bit before finally securing the back and trapping one of Stevenson's arms with his legs. With that done, Penn locked in a tight rear-naked choke as blood squirted into the air from Stevenson's cut like a sprinkler. Stevenson was forced to tap.