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  1. Home
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  3. Alfonsin Rosario

Alfonsin Rosario profile image

Sponsor Alfonsin Rosario

Dominican Republic
Athlete
Baseball - Cleveland Guardians
Local
Reach
High
Response Rate

About Alfonsin Rosario — MLB baseball athlete

Alfonsin Rosario is a professional baseball player with the Cleveland Guardians organization, bringing authentic pro-level credibility, strong athletic visuals, and consistent engagement around training, faith, and game-day lifestyle content. He’s a great fit for brands looking for a rising MLB talent with a polished presence and natural alignment to performance, activewear, and inspirational campaigns.


Why you should sponsor me for your next influencer campaign?

 The #15 Prospect for the Cleveland Guardians.

Overview

👨Male
📍ClevelandOhioUnited States

Cleveland Guardians

Other...

Dominican Republic

Has access to a professional photographer

Pre-Packaged Projects

Frequently asked questions

Promote your brand and sponsor Alfonsin Rosario today!

Health & WellnessFitness & PerformanceActivewearFashionPhotographyReligion

Pre-Packaged Projects

Social Media Deal

1 post & 1 story with the Alfonsin Rosario promoting your product.

$4,000
Estimated Price
Sign up to start an offer

Brand Ambassador Deal

Long-term deal involving appearances, photoshoots, social media and more.

$36,000
Estimated Price
Sign up to start an offer

Appearance Deal

Have Alfonsin Rosario make a live appearance at your next event

$6,000
Estimated Price
Sign up to start an offer

Custom

Need help on a custom package for this athlete?

Login to request help

Frequently asked questions

Brands can sponsor Alfonsin Rosario on OpenSponsorship by creating a free account, browsing Alfonsin Rosario'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.

Alfonsin Rosario 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 Alfonsin Rosario 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, Alfonsin Rosario's audience includes 15K+ Instagram followers, interests including Health & Wellness, Fitness & Performance, Activewear, Fashion, Photography, and more, based in Cleveland, Ohio, United States. Brands can use this profile to evaluate reach, content niche, and sponsorship fit before sending a proposal.

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Every influencer marketing article tells you the same thing: micro-influencers are better value. Almost none of them show you the receipts. So we pulled ours.

July 15, 2026

Ingredient Branding Done Right: How Immunotec Made Glutathione Mainstream

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Glutathione has become one of the most talked-about molecules in wellness — the “master antioxidant” that shows up in podcasts, longevity conversations, and the supplement aisle alike. But behind that mainstream moment is a brand that has spent decades making glutathione credible: Immunotec. This is the story of how OpenSponsorship helped Immunotec turn that scientific authority into everyday consumer demand — and a real-world example of what ingredient branding looks like when it’s done right.

July 13, 2026

America's 250th Birthday: The Brand Activation Playbook for 2026

America's 250th Birthday: The Brand Activation Playbook for 2026

2026 is the biggest year in American sports history

On July 4, 2026, the United States turns 250. The Semiquincentennial — America250 — isn't a single day; it's a Congress-chartered, yearlong national celebration running from Memorial Day 2025 through the end of 2026, with signature events in New York, Philadelphia, Washington, DC and Main Streets across the country.

July 1, 2026

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Get to Know Guardians No. 13 Prospect Alfonsin Rosario After Triple-A Promotion - Sports Illustrated

July 20, 2026

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RubberDucks outfielder Alfonsin Rosario named Player of the Week - MLB.com

July 6, 2026

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Alfonsin Rosario homers (16) on a fly ball to left field. - MLB.com

July 5, 2026

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Minor League Update: Alfonsin Rosario and the Sin of Whiffs - Baseball Prospectus

June 8, 2026

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RubberDucks Outfielder Alfonsin Rosario named Player of the Week - MLB.com

June 8, 2026

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Carl Edwards Jr. In play, run(s) to Alfonsin Rosario - MLB.com

August 2, 2026

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