Zion Clark is an elite athlete, motivational speaker, and entrepreneur, as well as the coauthor, with James S. Hirsch, of Zion Unmatched. He was featured in a short Netflix documentary and has appeared in segments on NBC's Nightly News, CNN’s The Human Factor, and The Ellen DeGeneres Show. He lives in Los Angeles.

James S. Hirsch is a New York Times best-selling author of several books, including Hurricane: The Miraculous Journey of Rubin Carter; Riot and Remembrance: The Tulsa Race Massacre and Its Legacy; and Willie Mays: The Life, the Legend. He is also the coauthor, with Zion Clark, of Zion Unmatched. He lives outside of Boston.