Jeff Monson will return to the M-1 ring on March 16 for M-1 Challenge 31, where he will tap gloves with Alexey Oleinik in a grappler-vs-grappler standoff. Monson, an ADCC champion, visited Russia back in November of 2011 when he lost to fighting legend Fedor Emelianenko. His opponent, Alexey Oleinik, is a regular on the Russian 'mixfight' circuit. He has fought in several M-1 events, won a KSW 8-
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