Referee blunders overshadow UFC Vegas 75 fights.
Referee Keith Peterson's mistake in stopping the UFC Vegas 75 prelim bout between Daniel Argueta and Ronnie Lawrence due to a perceived tap by Lawrence has drawn criticism from fighters, including Dominick Cruz and Daniel Cormier. After consulting with the replay official, Peterson recognized his error and the bout was ruled a no-contest. Some fighters called for rule changes to allow for restarting fights in such situations.