A blunder from referee Keith Peterson led to a no contest in the UFC on ESPN 46 fight between Dan Argueta and Ronnie Lawrence . After Argueta (9-1 MMA, 1-1 UFC) caught Lawrence (8-2 MMA, 2-1 UFC) in a mounted guillotine choke in the first round of their featherweight, Peterson thought he witnessed a tap from the defending fighter.
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