Bivouac (Aus)

A win in the Nov. 7 GI Breeders' Cup Classic moved Authentic (Into Mischief) into a co-topping second in the Longines World's Best Racehorse Rankings with a 126 rating, an increase from 124 which he had received after winning the GI Kentucky Derby Sept. 5. Improbable (City Zip), runner-up in the Classic, earned a 123 ranking, while Global Campaign (Curlin) earned a 120 rating following a third. Ghaiyyath (Ire) (Dubawi {Ire}), winner of a treble of Group 1 stakes this season, leads the rankings with a 130 rating, while dual...