UFC 61: Bitter Rivals was a mixed martial arts event held by the Ultimate Fighting Championship on Saturday, July 8, 2006. The main event was a Heavyweight Championship match between champion Tim Sylvia and former champion Andrei Arlovski. The co-main event was the highly anticipated re-match of TUF 3 coaches Tito Ortiz and Ken Shamrock.

Cast

Tim Sylvia

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Andrei Arlovski

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Josh Burkman

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Josh Neer

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Tito Ortiz

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Ken Kilpatrick

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Frank Mir

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Joe Stevenson

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Hermes Franca

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Jeff Monson

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Anthony Perosh

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Cheick Kongo

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