LEXINGTON, Ky. – The 4-year-old filly Tepin, who entered this season without even a stakes win, got good in the spring and even better in late summer and fall, and where most horses improve and decline as they grow and change, tire and freshen, Tepin just has kept blooming. Three weeks after winning her second Grade 1, and while facing males for the first time, she dominated a world-class field of milers and won the $2 million Breeders’ Cup Mile by 2 1/4 lengths under Julien Leparoux.