Top Row (foaled in 1931) was an American Thoroughbred racehorse who, during three years of racing, set two track records, one of which was a world record, and won the then world's richest horse race.Bred by Mrs. Elsie Cassatt Stewart, daughter of businessman and Thoroughbred racehorse owner, Alexander Cassatt, Top Row was claimed by trainer Bert Baroni for $3,500.