 Widely respected for his ability to work with young horses, two-year-old fillies trained by Tommy Doyle won the Junior Miss and Del Mar Debutante Stakes a combined thirteen times.Among his best-known horses, Doyle trained Typecast to the 1972 American Champion Older Female Horse title and in 1975 conditioned Avatar to wins in the Santa Anita Derby  and the third leg of the U.S.Triple Crown, the Belmont Stakes.