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  3. Hisashi Iwakuma

Hisashi Iwakuma profile image

Sponsor Hisashi Iwakuma

Japan
Athlete (retired)
Baseball - Seattle Mariners
Local
Reach
High
Response Rate

For brands

Want our team to run a deal with Hisashi Iwakuma, or find athletes like them?

Our Account Managers handle outreach, negotiation and delivery for brands on the platform.

About Hisashi Iwakuma — retired MLB baseball athlete

Hisashi Iwakuma is a former MLB pitcher and Seattle Mariners standout who now brings strong family-friendly, community-driven appeal to campaigns. He connects naturally with baseball fans, parents, and Japanese-speaking audiences through his public appearances, youth baseball work, and lifestyle content centered on family, travel, and music.


Why you should sponsor me for your next influencer campaign?

 Pitched a no-hitter on August 12, 2015, All-Star (2013)

Overview

🎂45
·
👨Male
📍SeattleWashingtonUnited States

Is Retired

Seattle Mariners

Japan

Pre-Packaged Projects

Frequently asked questions

Promote your brand and sponsor Hisashi Iwakuma today!

New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.

Home LifeMarriage & FamilyKids

Pre-Packaged Projects

Social Media Deal

1 post & 1 story with the Hisashi Iwakuma 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 Hisashi Iwakuma 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 Hisashi Iwakuma on OpenSponsorship by creating a free account, browsing Hisashi Iwakuma'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.

Hisashi Iwakuma 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 Hisashi Iwakuma 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, Hisashi Iwakuma's audience includes 97K+ Instagram followers, interests including Home Life, Marriage & Family, Kids, based in Seattle, Washington, United States. Brands can use this profile to evaluate reach, content niche, and sponsorship fit before sending a proposal.

Influencer Marketing Benchmarks: How Many Viewers Click an Influencer's Link? (2026)

Influencer Marketing Benchmarks: How Many Viewers Click an Influencer's Link? (2026)

Every brand running an influencer campaign on a cost-per-acquisition target eventually asks the same question: how many people will click the link? It decides how many creators you need, and whether your CAC target is realistic before you spend a dollar.

October 29, 2026

How to Measure Influencer Marketing ROI: A 5-Step Framework

How to Measure Influencer Marketing ROI: A 5-Step Framework

 

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

Ingredient Branding Done Right: How Immunotec Made Glutathione Mainstream

Ingredient Branding Done Right: How Immunotec Made Glutathione Mainstream

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

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Hisashi Iwakuma (SP) Stats, News, Rumors, Bio, Video - Yahoo Sports

August 9, 2026

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Complete Mariners history of qualifying offer decisions, signings and departures - Sodo Mojo

November 4, 2026

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Lookout Landing’s Top-50 Seattle Mariners - Lookout Landing

August 8, 2026

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Seattle Mariners unveil the top 50 players in franchise history - Seattle Sports

August 8, 2026

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Seattle Mariners to Reveal List of 50 Greatest Players in Franchise History - Heavy.com

August 8, 2026

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Mariners extend Randy Arozarena $23.15 million qualifying offer - Yahoo Sports

November 2, 2026

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