Based on his devastating, 19 1/4-length victory in the GI TVG Pacific Classic at Del Mar Sept. 3, Flightline (Tapit) has assumed the mantle of highest-rated horse in the world according to the latest edition of the Longines World's Best Racehorse Rankings (WBRR), which were published Thursday. The 4-year-old 'TDN Rising Star' has been given a rating of 139 for his smashing success in his first start at 10 furlongs and was improving by 12 points, having been rated on 127 following a similarly impressive victory in the GI Hill...