To promote its new series, A League of Their Own, based on Penny Marshall’s 1992 film, Prime Video worked with Newhouse Agency to use 30,000 baseballs to craft a letter of empowerment for female athletes at Los Angeles Valley College’s Monarch Stadium.

The letter was created in partnership with non-profit organization Baseball for All, which creates opportunities for girls to play, coach and lead in the sport, and consulted on A League of Their Own. After the event, Amazon donated the balls to Baseball for All, the San Diego Waves, Culver City Little League and other organizations.

Here’s a look at the letter:

Prime Video also staged a baseball game featuring stars from the series as well as female athletes from baseball, softball and other sports. Joining series star and co-creator Abbi Jacobson (Broad City) were professional softball players Haley Cruse Mitchell, Rachel Garcia and Paige Halstead; Kelsie Whitmore, the first woman to appear in the starting lineup of an Atlantic League baseball game; U.S. Olympic athletes Amy Rodriguez, Illona Maher, Tamrya Mensah Stock and Ibtihaj Muhammad; All-American gymnast Katelyn Ohashi; former Harlem Globetrotter Crissa Jackson; pro skateboarder Mariah Duran; track-and-field champion Alysia Montaño; snowboarder and Paralympic gold medalist Brenna Huckaby; first openly non-binary WNBA player Layshia Clarendon and UFC fighter Mackenzie Dern.

A League of Their Own premieres Friday, August 12 on Prime Video.

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Client: Prime Video

Agency: Newhouse Agency

Executive Producer: Andy Robbins, Robert Nuell

Creative Director: Erik Blair

Producer: Amy Castellano

Copywriter: Tim Greene

Project Manager: Amy Castellano, Maddy Peirce, Melissa Hope

Project Coordinator: Emma Guido

Senior Editor: Frederick Snyder

Asst. Editor/Motion Design: Nick Barreda

Graphic Design: Ally Svurud

Tags: a league of their own newhouse agency prime video

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