The odds convey her level of popularity. When Winx won the 2015 Cox Plate for her fifth consecutive victory, she was the 15-8 favorite. Last year, she won the Cox Plate at 4-5 in her 13th straight win. The streak is now at 21 races. Earlier this week, Winx was 1-6 in future-book betting for Saturday’s Group 1 Cox Plate at 1 1/4 miles on turf at Moonee Valley in Melbourne, Australia. :: Enjoy news and analysis from DRF? Get handicapping analysis, real-time coverage, special reports, and charts. Unlock access with DRF Plus. The $2.3 million Cox Plate is Australia’s leading weight-for-age race. The Melbourne Cup, a two-mile handicap run at Flemington Racecourse on Nov. 7, is that nation’s most popular race. Winx is by far Australia’s most popular horse. The presence of the 6-year-old mare has led to a sellout for Saturday’s program at Moonee Valley. The Cox Plate has a post time of 2 a.m. Eastern on Saturday, or 11 p.m. Pacific on Friday. Trained by Chris Waller, Winx has won four races since returning from a four-month break in mid-August. In the Group 1 Turnbull Stakes on Oct. 7 at Flemington Racecourse, Winx dominated six rivals to win the race at 1 1/4 miles on turf by 6 1/2 lengths. Her first three wins in that span were much closer, by margins of a head to 1 1/4 lengths at distances ranging from seven furlongs to a mile. This year, Winx has won eight races – five Group 1 races and three Group 2 races. Her winning streak includes 14 Group 1 races, all in Australia. Winx, the Australian Horse of the Year the last two years, is part of a field of nine in the Cox Plate. She will be ridden by Hugh Bowman from post 6 and has a familiar list of rivals. Humidor was third to Winx in the Turnbull and finished fifth in the Group 1 Caulfield Cup last Saturday. Happy Clapper was second to Winx in the Group 1 George Main Stakes on Sept. 16 at Royal Randwick. Two weeks later, Happy Clapper won the Group 1 Epsom Stakes at a mile at Randwick, and he was second in his last start, which came in the Group 3 Craven Plate at 1 1/4 miles Oct. 14 at Randwick. If there is a true threat to Winx, it could come from Gailo Chop, who won the Group 1 Caulfield Stakes at 1 1/4 miles Oct. 14. Gailo Chop was eighth in the 2016 Cox Plate.