ELMONT, N.Y. - Bernardini, the leading 3-year-old in the country, worked five furlongs in 1:03.33 Tuesday morning at Belmont Park, his final move in preparation for Saturday's Grade 1, $750,000 Jockey Club Gold Cup. Exercise rider Simon Harris kept Bernardini even farther off the rail than usual, in part because of his dissatisfaction with Belmont's main track and in part because several horses had worked before him and the inside part of the track was chewed up.