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Jack Mayfield is an active professional baseball infielder with authentic reach across the sport, family life, and training culture. As a Texas-born former Oklahoma Sooner now playing for Toros de Tijuana, he offers brands a credible fit for baseball, active lifestyle, and family-focused campaigns.
David Jack Mayfield (born September 30, 1990) is an American professional baseball infielder in the Los Angeles Angels organization. The Houston Astros signed Mayfield as an undrafted free agent in 2013. He debuted in the major leagues in 2019 for Houston. He has played in MLB for the Houston Astros, Los Angeles Angels, and Seattle Mariners.
Toros de Tijuana
University of Oklahoma (OU)
United States
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Jack Mayfield promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Jack Mayfield make a live appearance at your next event
Brands can sponsor Jack Mayfield on OpenSponsorship by creating a free account, browsing Jack Mayfield'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.
Jack Mayfield 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 Jack Mayfield 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, Jack Mayfield's audience includes 15K+ Instagram followers, interests including Marriage & Family, Kids, Fitness & Performance, Activewear, Baseball, and more, based in Del Rio, TX, 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