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For brands
Our Account Managers handle outreach, negotiation and delivery for brands on the platform.
Sophia Martelli is a rising soccer talent with a polished Instagram presence that blends competitive Alabama soccer content with fashion-forward, lifestyle-driven visuals. As a young athlete with strong on-field credibility and a highly aesthetic feed, she offers brands a compelling way to reach teen and young adult audiences across sports, activewear, travel, and lifestyle campaigns.
ECNL 1st Team 21,22,23
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Sophia Martelli promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Sophia Martelli make a live appearance at your next event
Brands can sponsor Sophia Martelli on OpenSponsorship by creating a free account, browsing Sophia Martelli'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.
Sophia Martelli 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 Sophia Martelli starts at $480 for a social media post, $720 for a appearance and $4,800 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, Sophia Martelli's audience includes 7K+ Instagram followers, interests including Activewear, Fashion, Fitness & Performance, Fashion, Travel, and more, based in Atlanta, GA, 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