David Epstein (journalist)

David Epstein (born 1980) is an American journalist. He is the author of the #1 New York Times best seller Range: Why Generalists Triumph in a Specialized World (2019), The Sports Gene: Inside the Science of Extraordinary Athletic Performance (2013), and Inside the Box: How Constraints Make Us Better (2026), both also New York Times best sellers. Epstein has given two TED talks related to his books, which have together been viewed more than 12 million times. Epstein was previously an investigative reporter at ProPublica. Prior to ProPublica, Epstein was a senior writer at Sports Illustrated, where he specialized in science issues in sports and investigative reporting. With his colleague Selena Roberts, Epstein broke the story that the Yankees' Alex Rodriguez tested positive for steroids in 2003.