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Gina Carano puts her undefeated record on the line against Cristiane "Cyborg" Santos for the inaugural Strikeforce women's championship Saturday night, 10:30 p.m. on Showtime. Carano, a former American Gladiators star, is the underdog, but after training with Randy Couture, it should be a great -- and definitely groundbreaking -- fight.

Photo: Robert Laberge/Getty Images

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