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In page Patrick Smith (fighter):

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Smith returned at UFC 6 facing Rudyard Moncayo, a kenpo karate stylist from Ecuador. He opened the fight in spectacular fashion by landing a running front kick to Moncayo's chest, knocking him down and sending him sliding towards the fence.[5] Smith then followed with a takedown and gained mount position, and ultimately locked a rear naked choke when Moncayo tried to escape, making him tap out.[6] However, Smith had to withdraw from the tournament due to stomach cramps caused by an injury sustained during the fight. He was replaced by Anthony Macias.[7]