 In 1962, he was harness racing's career money leader and named United States Harness Horse of the Year.He won the International Trot held at Roosevelt Raceway in both 1961 and 1963, and was recognized in both of those years as trotter of year.Su Mac Lad was owned by I. W. Berkemeyer of New Milford, New Jersey, who purchased the gelding in 1959, and was trained and driven by Stanley Dancer.