Michael Blowen glanced at the 1977 Sports Illustrated cover of Triple Crown champion Seattle Slew when it arrived in the mail and immediately discarded it. A horse on the cover of such a prominent magazine? “I thought thinking of them as athletes was absurd,” he said. Blowen, then a writer for the Boston Globe, accompanied Bob Taylor, one of his editors, to Suffolk Downs seven years later. The visit to the Massachusetts track was life-changing.