Strikeforce: Rousey vs. Kaufman, which is headlined by the Strikeforce women’s bantamweight championship bout between Ronda Rousey and Sarah Kaufman, and the middleweight bout between Ronaldo “Jacare” Souza and Derek Brunson, airs on Showtime from the Valley View Casino Center in San Diego, 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: 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.

Strikeforce: Henderson vs. Babalu II, also known as Strikeforce: St. Louis, was a mixed martial arts event that was held by Strikeforce on December 4, 2010 at the Scottrade Center in St Louis, Missouri, United States.

World Heavyweight Champion Alistair "The Demolition Man" Overeem (32-11) will make his highly anticipated return to action against heavy-handed knockout artist Brett "The Grim" Rogers (10-1) in the main event of a STRIKEFORCE mixed martial arts (MMA) extravaganza at Scottrade Center in St. Louis, Mo., on Saturday, May 15. In another heavyweight confrontation, Andrei "The Pitbull" Arlovski (15-7) will clash with Antonio "Big Foot" Silva (13-2).