MMA's 10 best pound-for-pound fighters

While the list saw no movement of late, Jose Aldo and Jake Shields affirmed their positions among the pound-for-pound best that mixed martial arts has to offer.

On Sept. 30, Aldo furthered his reputation as the top 145-pounder in the world by defending his World Extreme Cagefighting featherweight title against Manny Gamburyan at WEC 51. Previously unbeaten in the division, Gamburyan ultimately proved no match for the dynamic Brazilian's fearsome firepower, winding up on the business end of a second-round knockout. Up next for the champion: an early 2011 title defense against a challenger to be determined.

Meanwhile, 25 pounds up the scale, Shields -- a man who could be seen as Aldo's stylistic opposite -- earned his most recent win the hard way. The Cesar Gracie product needed all three rounds to best Martin Kampmann, earning a hotly contested split decision over the Dane in Shields' UFC debut at UFC 121. The win pushes Shields to the front of the line for a shot at the UFC welterweight title.