Enable vs Winx was the one clash out of this list of five that could have actually happened, but connections of the Australian superstar opted against a trip to Europe and a possible tussle with Enable.
John Gosden's wonder-filly will begin her route towards a third Arc at Longchamp next week at Sandown in the Coral Eclipse, having won the continent's most prestigious race in France the past two years.
She has only lost once in eleven appearances which was on her second ever start, in a career which has also seen her reign supreme in the Oaks at Epsom, the King George at Ascot and the Breeders Cup Turf at Churchill Downs.
Talking of records, Winx - trained by Chris Waller, retired after her third Queen Elizabeth Stakes success at Randwick, and her thirty-third victory in a row.
Yes - thirty third victory consecutively, including four Cox Plate's, but her owners abandoned any plans of heading anywhere outside Australia with the horse's safety and welfare of paramount importance.
However, whilst the racing globe unanimously profiled Winx as one of the greatest Australian mares ever, it will always be a mystery on how she would have related to other horses in the same division worldwide.
She was beating next-to-nothing horses down under, and nowhere near the quality of the likes of Enable.
The few British guns that she did face such as Benbatl were absolutely spanked as expected, but certainly did not represent the best of the British bunch.
Australian's may have got a little carried away, and although winning thirty-three races in a row is some feat, it is hard to conclude whether she actually is one of the greatest of all time across the world.
Enable vs Winx was always tipped up as the battle to define the world's best horse over ten furlongs - or filly/mare in this case, which would have involved Winx stepping up from her preferred distance of a mile, and Enable coming down from one-mile-and-a-half.
If they clashed?
OUR PREDICTION: ENABLE