Regret References Regret racehorse Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Kentucky Derby/ Records…win the Kentucky Derby was Regret in 1915; Genuine Risk (1980) and Winning Colors (1988) are the only other fillies to have won. Read More…win the Kentucky Derby was Regret in 1915; Genuine Risk (1980) and Winning Colors (1988) are the only other fillies to have won. Read More