Sherdog’s Top 10: MMA Upsets Mixed martial arts, like other sports, has enjoyed its share of David vs. Goliath moments over the years.

Pros Pick: Aldo vs. Edgar A poll of their peers shows Jose Aldo, Frankie Edgar in dead heat ahead of their UFC 156 title fight on Saturday in Las Vegas.

Strikeforce: 10 Memorable Moments Unforgettable events, characters will keep promotion alive long after it closes for business on Saturday in Oklahoma City.

Pros Pick: St. Pierre vs. Condit A majority of fighters, trainers see welterweight champion Georges St. Pierre returning to form in UFC 154 unification bout.

Pros Pick: Silva vs. Sonnen 2 Their first bout was epic, complete with an ending even the best scriptwriter could not have crafted.

Pros Pick: Silva vs. Franklin 2 Three summers ago, Wanderlei Silva lost a unanimous decision to onetime UFC middleweight champion Rich Franklin in Germany. It was the Brazilian...

Strikeforce ‘Tate vs. Rousey’ Preview As if a depleted roster was not bad enough, injuries have robbed Strikeforce “Tate vs. Rousey” of a few marquee matchups, most notably the postponed heavyweight grand prix final between Josh Barnett and...

Pros Pick: Jones vs. Machida Light heavyweight champion Jon Jones will defend his crown for a second time when he meets former titleholder Lyoto Machida in the UFC 140 main...

Pros Pick: Shogun vs. Hendo For the fourth weekend in a row, the Ultimate Fighting Championship will be on active duty, as UFC 139 “Shogun vs. Hendo” hits the HP...

Pros Pick: Jones vs. Rampage The Pepsi Center in Denver will be the place to be on Saturday, as UFC 135 descends upon the Mile High City with one of the more intriguing main events of 2011. There, in a crossroads fight, reigning light heavyweight king...