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Guillermo Granier is a College of Charleston baseball player with a strong South Carolina presence and an authentic, lifestyle-driven social feed. He offers brands a relatable mix of student-athlete credibility, social appeal, and coastal, on-the-go content that fits well with travel, food & drink, and active lifestyle campaigns.
College of Charleston Cougars
College of Charleston
Venezuela, Bolivarian Republic of
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Guillermo Granier promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Guillermo Granier make a live appearance at your next event
Brands can sponsor Guillermo Granier on OpenSponsorship by creating a free account, browsing Guillermo Granier'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.
Guillermo Granier 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 Guillermo Granier starts at $120 for a social media post, $1,200 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, Guillermo Granier's audience includes 2K+ Instagram followers, based in Charleston, South Carolina, 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