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Kaelin Costello is a Delaware football athlete with strong crossover appeal for brands targeting sports fans, college audiences, and active young consumers. His profile blends game-day credibility with lifestyle content around travel, cars, crypto, shoes, and fitness-focused living, making him a natural fit for campaigns that want authentic athlete influence without feeling overly promotional.
You should sponsor me because I will treat your brand as my top priority. As a walk-on, NIL has given me opportunities to provide for me and I do not take that for granted. I will work extremely hard to give your brand a great and reliable platform to promote.
2023 CSC Academic All-District Team
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Kaelin Costello promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Kaelin Costello make a live appearance at your next event
Brands can sponsor Kaelin Costello on OpenSponsorship by creating a free account, browsing Kaelin Costello'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.
Kaelin Costello 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 Kaelin Costello starts at $240 for a social media post, $600 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, Kaelin Costello's audience includes 3K+ Instagram followers, interests including Health & Wellness, Fitness & Performance, Fashion, Apparel, Home Life, and more, based in Newark, Delaware, 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