Strikeforce Challengers 18: Gurgel vs. Duarte was a mixed martial arts event held by the Strikeforce. The eighteenth Challengers episode took place on August 12, 2011 at Palms Casino Resort in Las Vegas, Nevada.
Strikeforce Challengers: Voelker vs. Bowling III was a mixed martial arts event held by Strikeforce. The seventeenth Challengers episode took place on July 22, 2011 at the Palms Casino Resort in Las Vegas, Nevada.
