Group 2 John F Feehan Stakes over at Moonee Valley showed her competitiveness in shorter races. In the 2004 Caulfield Cup, Makybe Diva drew barrier 18 and settled at the back of the field. She was narrowly defeated by Elvstroem, who led all the way. Makybe Diva was sent out a $3.60 favourite, and won the 2004 Melbourne Cup. In driving rain, the mare defeated a field featuring multiple Irish St. Leger winner Vinnie Roe, Caulfield Cup winners Mummify and Elvstroem, Mamool from the Godolphin stable, and the 2002 Melbourne Cup winner Media Puzzle. Resuming racing in February, Makybe Diva put in close finishes behind Elvstroem in both the C F Orr Stakes and St George Stakes, at Caulfield. On 12 March, she won the Australian Cup, a weight for age event over , and in the process broke the Australian record and set an unofficial world record for 2000 m on turf. She proceeded to win Sydney's most important WFA race, the BMW Stakes, with a last-to-first burst. In April and May, she raced in Japan, where she failed in two starts, the latter of which was over in the Group One Tenno Sho (Emperor's Cup). Makybe Diva was named Australian Champion Racehorse of the Year for the 2004/05 season. Along with this, she was also named Australian Champion Stayer and Australian Champion Filly and Mare. A three-quarter brother to Makybe Diva, by Redoute's Choice, was sold in April 2005 for an Australian record price of $2.5 million. Subsequently, named Musket, the colt won his debut at Canterbury in August 2006, and in 2008 won the Gr.2 Shannon Stakes at Rosehill. 2005/2006: Seven-Year-Old Season (Melbourne Cup 3) Resuming racing in August 2005, Makybe Diva won the Group 2 Memsie Stakes first up, before being defeated by a nose in the Dato Tan Chin Nam Stakes at Moonee Valley. Two weeks later, with a run down the outside of the field, Makybe Diva won the Turnbull Stakes over 2,000 m at Flemington. The mare further enhanced her reputation despite being eight horses wide on the home turn, with a comfortable victory in the 2005 Cox Plate, subsequently beating 2006 winner Fields of Omagh. Prior to the Melbourne Cup, whether Makybe Diva would start was in doubt, after her connections said she would not run if the track was "too firm". After the VRC decided to water the track, however, she