Ipi Tombe, a South African champion and North American graded winner, will sell at the Tattersalls December breeding stock auction in Newmarket, England.
Craig Bandoroff's Denali Stud of Paris, Ky., will consign the mare, currently in foal to Sadler's Wells.
Banderoff said Ipi Tombe's owners - Team Valor, WinStar Farm, and an African group called Sunmark Partners - decided to sell the mare in England largely because she already is boarding at Coolmore Stud in Ireland.