Quinn Mulhern

This event was the first event the UFC held in Singapore. It was the first Fight Night card that wasn't aired on television in the United States market. Instead, the UFC offered fans based in North America, Australia and New Zealand the option to watch it via a new subscription-based digital network called UFC Fight Pass. The event was expected to be headlined by a welterweight bout between Jake Ellenberger and Tarec Saffiedine. However in late November, Ellenberger pulled out of the bout citing an injury and was replaced by Hyun Gyu Lim. Lim's original opponent, Kiichi Kunimoto instead faced Luiz Dutra. Tatsuya Kawajiri was expected to face Hacran Dias at the event. However, Dias pulled out of the bout citing an injury. Kawajiri instead faced promotional newcomer Sean Soriano.[ UFC newcomer Will Chope was originally scheduled to face fellow newcomer Bekbulat Magomedov on this card. However, Magomedov was removed from the card and replaced by Max Holloway.

At UFC 158 the top welterweights in the world converged on the Bell Centre in Montreal on Saturday, March 16, 2013 and it was an unforgettable night of fights. In the main event, welterweight champion Georges St-Pierre faced his fiercest rival, Nick Diaz, in a highly anticipated showdown. Plus, another rivalry was born when "The Natural Born Killer" Carlos Condit faced 170-pound knockout artist Johny "Big Rigg" Hendricks.

Strikeforce Heavyweight Grand Prix Finals: Barnett vs. Cormier (aka Strikeforce: Barnett vs. Cormier) was a mixed martial arts event held by Strikeforce that served as the Heavyweight Tournament Finals. It took place on May 19, 2012 at the HP Pavilion in San Jose, California.

Strikeforce Challengers 20: Britt vs. Sayers was a mixed martial arts event held by the Strikeforce. The fourteenth Challengers episode took place on November 18, 2011 at Palms Casino Resort in Las Vegas, Nevada.

Strikeforce Challengers 19: Larkin vs. Rossborough was a mixed martial arts event held by the Strikeforce. The fourteenth Challengers episode took place on September 23, 2011 at Palms Casino Resort in Las Vegas, Nevada.

Strikeforce Challengers: Fodor vs. Terry was a mixed martial arts event held by Strikeforce. The sixteenth Challengers episode took place on June 24, 2011 at ShoWare Center in Kent, Washington.