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Brook Sibrian, known as MIGHTY Brook™, is an active female boxer whose content blends elite fight preparation, comeback storytelling, and authentic behind-the-scenes moments. With strong community ties, a recognizable TeamMighty identity, and a mix of athletic credibility plus lifestyle appeal, she’s a compelling fit for brands looking to align with grit, resilience, and real audience connection.
TeamMighty
Other...
United States
Lee Espinoza Coachella Valley Boxing Club & Fitness, Liam’s Life
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Brook Sibrian promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Brook Sibrian make a live appearance at your next event
Brands can sponsor Brook Sibrian on OpenSponsorship by creating a free account, browsing Brook Sibrian'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.
Brook Sibrian 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 Brook Sibrian starts at $480 for a social media post, $1,800 for a appearance and $1,200 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, Brook Sibrian's audience includes 8K+ Instagram followers, interests including Fitness & Performance, Apparel, Fashion, Travel, Shopping, and more, based in Coachella, CA, 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