In 1989, he became the first African-American trainer in seventy-eight years to saddle a horse in the Kentucky Derby when Northern Wolf ran sixth to winner Sunday Silence.
After being ignored by most American breeders, Sunday Silence was eventually sold to Japanese breeder Zenya Yoshida to stand at his Shadai Stallion Station in Shiraoi, Hokkaido.
The Sunday Times | The Sunday Telegraph | Sunday school | Sunday Night Football | Billy Sunday | Sunday | NBC Sunday Night Football | Palm Sunday | The Sunday Times (UK) | Taking Back Sunday | Dead Silence | Bloody Sunday | Black Sunday | Sunday Tribune | CBS News Sunday Morning | The Sunday Times Magazine | The Sunday Game | The Silence of Dean Maitland | Sunday School | Sunday Morning | Sunday Mirror | Sunday league football | Ski Sunday | Scotland on Sunday | Any Given Sunday | The Sunday Edition (CBC Radio) | The Sunday Edition | The Sunday Business Post | The Sound of Silence | The Mail on Sunday |
Through H-G-W Partners, Hancock owned and raced 1989 U.S. Horse of the Year Sunday Silence whose wins included the Kentucky Derby, Preakness Stakes, and Breeders' Cup Classic.