LEXINGTON, Ky. - Bob Lewis was as well known in America's sale pavilions as he was in its racetrack clubhouses. Usually accompanied by advisors D. Wayne Lukas, Bob Baffert, and John Moynihan, Lewis and his wife, Beverly, regularly attended yearling and 2-year-old auctions from California to New York. They were annually among top buyers by total expenditures. But the Lewises weren't only buyers. When their champion filly Serena's Song retired and became a broodmare, the Lewises also became very successful sellers.