Nate Marquardt changera comme prévu de catégorie de poids pour le welterweight à l'événement UFC on Versus 4 où il affrontera Anthony Johnson. Même si Nate revient d'une victoire face à Dan Miller à 185 lbs, il a tout de même décidé de migrer vers les 170lbs. Soulignons qu'il a aussi été à 155 lbs plus tôt dans sa carrière. De son côté, Johnson à battu Dan Hardy à l'UFN 24.
26 juin , Pittsburgh, Pennsylvania:
Carte principale:
Nate Marquardt (31-10) vs. Anthony Johnson (9-3)
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Cheick Kongo (15-6) vs. Pat Barry (6-2)
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Matt Mitrione (4-0) vs. Christian Morecraft (7-1)
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Martin Kampmann (17-5) vs. John Howard (14-6)
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Carte préliminaire:
Tyson Griffin (14-5) vs. Manny Gamburyan (11-5)
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Joe Lauzon (19-6) vs. Curt Warburton (7-2)
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Matt Brown (11-10) vs. Rich Attonito (9-4)
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Joe Stevenson (31-13) vs. Javier Vazquez (15-5)
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Michael Johnson (8-5) vs. Edward Faaloloto (2-1)
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Matt Grice (13-3) vs. Ricardo Lamas (9-2)
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Charlie Brenneman (13-1) vs. T.J. Grant (16-5)
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Nik Lentz (23-3-2) vs. Charles Oliveira (14-1)
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