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Strikeforce was a mixed martial arts organization that operated from 2006 to 2013. It was founded by Scott Coker and Dan Henderson, and was based in San Jose, California. Strikeforce held events in the United States, Canada, Japan, and the United Kingdom. In 2011, Strikeforce was acquired by Zuffa, the parent company of the Ultimate Fighting Championship (UFC). The final Strikeforce event took place in June 2013.