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Mefi Monterroso is an active MMA fighter and APFC talent with a fight-first audience built around combat sports, boxing crossover moments, and real behind-the-scenes camp content. He’s a strong sponsorship fit for brands that want authentic reach with fans who follow hard-training, high-intensity competition, and travel-driven lifestyle content.
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Mefi Monterroso promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Mefi Monterroso make a live appearance at your next event
Brands can sponsor Mefi Monterroso on OpenSponsorship by creating a free account, browsing Mefi Monterroso's profile, and sending a sponsorship proposal for social posts, appearances, or integrated campaigns. OpenSponsorship handles messaging, deliverables, and deal terms in one platform so you can connect directly with this athlete.
Mefi Monterroso is listed on OpenSponsorship and available for brand sponsorships. Brands can review campaign packages, audience details, and pricing on this profile, then submit a proposal to start a partnership with this athlete.
According to OpenSponsorship, estimated pricing to sponsor Mefi Monterroso starts at $400 for a social media post, $600 for a appearance and $3,600 for a brand ambassador campaign. Final rates depend on deliverables, usage rights, and campaign scope. Sign up on OpenSponsorship to view packages and send a proposal.
According to OpenSponsorship, Mefi Monterroso's audience includes 2K+ Instagram followers, interests including Fitness & Performance, Combat Sports, Boxing, Travel, based in United States. Brands can use this profile to evaluate reach, content niche, and sponsorship fit before sending a proposal.

How do you measure influencer marketing ROI when half the numbers social media gives you are vanity metrics? It is the question brands ask us most, and it came up again when I joined Massimo Marinelli on the Berkida Ventures Podcast. After more than ten years and thousands of brand deals with athletes and creators at OpenSponsorship, here is how we think about it, and the framework we use with our clients.
October 28, 2026