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Cooper Donlin is a college baseball athlete at Oakland University who pairs on-field credibility with an authentic creator voice built around surfing, travel, photography, and outdoor adventure. He’s a strong fit for brands that want a relatable athlete-in-progress with performance-driven credibility and engaging lifestyle storytelling across Instagram and YouTube.
Why sponsor me? As I am sitting in my bedroom on Saturday night, writing this after a long day of finishing up final exams, strength training, health routines such as isometric training and daily yoga, and a four-hour shift being a busboy at a local restaurant. Sponsoring me would benefit a company that wants a REAL representation of TRUE hard work, dedication, and resiliency to be showcased consistently.
Golden Grizzlies
Oakland University
United States
Eagle Children's Charities
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Cooper Donlin promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Cooper Donlin make a live appearance at your next event
Brands can sponsor Cooper Donlin on OpenSponsorship by creating a free account, browsing Cooper Donlin'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.
Cooper Donlin 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 Cooper Donlin 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, Cooper Donlin's audience includes 2K+ Instagram followers, interests including Fitness & Performance, Health & Wellness, Activewear, Training, Family, and more. 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