Lucas Dupps, who wore many hats in a lengthy career spent primarily at New York racetracks, died Thursday night after a short battle with cancer. He was 90.\nBeginning in 1935, Dupps was in New York as an exercise rider and then a jockey. According to published reports, in his apprenticeship year of 1938, he finished second to Eddie Arcaro in the jockey standings at Belmont Park. He would later work for the New York Racing Association as an outrider, paddock judge, and patrol judge. He retired from NYRA in 1992.\nDupps is survived by his wife, Kristina Dupps, a former trainer who now works as an assistant to George Weaver, and a daughter, Jessy Gussy.\nA viewing will be held Sunday 2-5 p.m. and 7-9 p.m. at the Krauss Funeral Home at 1097 Hempstead Turnpike in Franklin Square, N.Y. A funeral service will be held there on Monday at 10 a.m.\nThe family asked that in lieu of flowers, donations be made to St. Jude's Children's Research Hospital, P.O. Box 50, Memphis, Tenn., 38101.