Check out the top ten fighters in mixed martial arts for the month of October 2010.
10. Brock Lesnar
The UFC heavyweight champ could face his toughest test to date when he defends the belt against Cain Velasquez at UFC 121 later this month. If Lesnar gets by Velasquez, he'll have Junior dos Santos waiting in the wings. There are no shortage of top-shelf opponents for Lesnar in the near future.
Last month: #10
Up next: Cain Velasquez