World-Class MMA Comes to Buenos Aires on Saturday, November 1 at United Fight CenterGRAND RAPIDS, Mich., Oct. 01, 2025 (GLOBE NEWSWIRE) -- Xtreme Fighting Championships (XFC), presented by Xtreme One Entertainment, Inc. (OTC: XONI), today announced its long-awaited return to South America, host to more than a dozen major XFC events in the promotion’s early days as an emerging global MMA league. The acclaimed XFC Young Guns series is set for Saturday, November 1, 2025, at the United Fight Center in Buenos Ai ...