
For brands
Our Account Managers handle outreach, negotiation and delivery for brands on the platform.
Ā Marcell Harris is a Safety out of the University of Florida. He was drafted by the San Francisco 49ers in 2018.
San Francisco 49ers
University of Florida
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Marcell Harris promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Marcell Harris make a live appearance at your next event
Brands can sponsor Marcell Harris on OpenSponsorship by creating a free account, browsing Marcell Harris'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.
Marcell Harris 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 Marcell Harris starts at $4,000 for a social media post, $6,000 for a appearance and $36,000 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, Marcell Harris's audience includes 25K+ Instagram followers, interests including Cars, Fashion, Health, Technology, based in San Francisco, California, United States. Brands can use this profile to evaluate reach, content niche, and sponsorship fit before sending a proposal.

Ā
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