The mare Makybe Diva added the $3 million Cox Plate (Aus-I) to her legendary resume Saturday at Moonee Valley.Already a two-time Melbourne Cup (Aus-I) winner, Makybe Diva has now also won the nation's weight-for-age championship race while banking a record $11.4 million (Australian) in her career.Under rainy skies, Australia's greatest stakes winner, ridden by Glen Boss, grabbed the lead from Lotteria with 200 meters to go and held her off for a 1 1/4-length victory. Fields of Omagh, who won the Cox Plate in 2003, finished third, a half-length farther behind.Lee Friedman, who a week earlier lost his champion Mummify to a racing injury, conditions Makybe Diva for Tony Santic."I was always very confident she would win," Freedman told the Sunday Telegraph. "We weren't worried about the other horses." Friedman is considering a third run at the Melbourne Cup Nov. 1 at Flemington for Makybe Diva, who has won the last two editions. No horse has ever won three Cups.