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Josh Emmett vs Kevin Vallejos headlines UFC APEX event in Las Vegas
March 13, 2026

25-year-old flyweight Mark Vologdin (5–2 in MMA Series) has learned the name of his opponent for his UFC debut. He will take on John Castaneda, a U.S.-based fighter of Mexican heritage. Castaneda has competed eight times in the promotion, posting a 4–4 record. He is 34 years old.
Vologdin earned his UFC contract thanks to his performance on Dana White’s Contender Series. Last October, Mark delivered an exceptionally action-packed fight against Adrian Martinetti. Vologdin lost by decision, but his performance strongly impressed UFC president Dana White, and the Russian athlete ultimately secured a deal with the organization.
Castaneda vs. Vologdin is scheduled for April 18 and will be contested over three five-minute rounds.