Thoroughbred racing in the United States is at the forefront of a renaissance that could change substantially how existing fans engage with the sport and its effectiveness in attracting new fans. This forecast was offered in remarks made by Todd Gralla, principal/director of equestrian services for Populous, a global architectural design company, Aug. 1 during The Jockey Club Round Table Conference on Matters Pertaining to Racing held in Saratoga Springs, N.Y.