GOLDIKOVA, the most successful horse in Breeders' Cup history, could attempt to still further redefine the boundaries of equine achievement after trainer Freddie Head on Sunday described Europe's racing queen as "50-50" to return to America next year.

Having already delighted racing fans by agreeing to campaign Goldikova this season, connections of France's record-breaking mare are now contemplating the even bolder move of postponing retirement in favour of a bid to secure Breeders' Cup glory for the fourth time.

Gerard and Alain Wertheimer, owners of Goldikova, will spend the next week assessing their options buoyed by the memory of Goldikova's spectacular third consecutive win in the Breeders' Cup Mile at Churchill Downs on Saturday, a victory which gave the French champion a 12th Group/Grade 1 triumph.

Head said: "Let's say there's a 50-50 chance of her racing next year. There's no reason why she wouldn't be just as good. Six is not that old.

"However, it's a very difficult decision for the owners. She is very special to us all, and when horses are running there are always risks. I'll let them decide."

William Hill priced Goldikova at 7-2 to notch what would be an incredible fourth Breeders' Cup Mile in 2011, when the meeting will again be run at Churchill Downs.

The firm's spokeswoman Kate Miller said: "Goldikova's audacious owners have already proved that they dream the unthinkable by returning to the Breeders for three wins, and they have yet to rule out an attempt at a fourth.

"Goldikova's seemingly effortless third win turned her from a modern great into a legend. Surely a fourth win would make her an equine god."