Owner and breeder John Kerber estimates that he purchased his first broodmare in 1960, three years into his tenure as a junior high school science teacher. Some six decades later, undefeated 'TDN Rising Star' Ain't No Elmers (Goldencents) is the filly the affable octogenarian calls "the one I've been waiting for my whole life." "At my age, how many more like this can I expect?" wondered Kerber, 83, who resides in the small town of Emmetsburg, Iowa, in the northwest quadrant of the state. Kerber acquired the filly's dam, Voussoir...