( Courtesy of UFC.com ) Michael Johnson steps into the Octagon opposite Melvin Guillard at UFC Fight Night 37 in London, England, on March 8. But first, take a look back at his second-round knockout of Gleison Tibau at UFC 168. Follow MMAWeekly.com on Facebook , Twitter and Instagram . Powered By WizardRSS.com | Full Text RSS Feed | RFID | Amazon Affiliate
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