The Fight Network's Ariel Shnerer breaks down the top 10 pound-for-pound fighters in mixed martial arts.

Kevin Ferguson, better known to casual combat sports fans as Kimbo Slice, has officially left the mixed martial arts world to pursue a professional boxing career.

The age-old debate over which combat sport is superior, boxing or MMA, will be the hot topic this Saturday night as James Toney makes his professional mixed martial arts debut against UFC Hall of Famer Randy Couture at the TD Garden in Boston, Mass.

Two Strikeforce titles are on the line this Saturday night on Showtime as the promotion invades Houston's Toyota Centre.

2010 has produced its share of intriguing rematches in the MMA world, including Mauricio Rua vs. Lyoto Machida, Cung Le vs. Scott Smith and B.J. Penn vs. Frankie Edgar.

After months of build-up in which challenger Chael Sonnen has ridiculed, mocked, insulted and degraded UFC middleweight champion Anderson Silva, he will finally get an opportunity to back up his harsh words when they face off at UFC 117.

Click here for a breakdown of the top 10 pound-for-pound fighters in mixed martial arts.

Following the first decisive setback of Fedor Emelianenko's career, the title of No. 1 heavyweight in MMA is up for grabs this Saturday night as Shane Carwin challenges UFC heavyweight champion Brock Lesnar at UFC 116 in Las Vegas.

The world's most dangerous fighter returns this Saturday night for his second test in the Strikeforce cage.

This Saturday night, two UFC poster boys and former rulers of their respective divisions will collide with one fighter moving up the light heavyweight ranks and another falling further down the ladder.