CHELTENHAM, UK--Emotions ran high at Cheltenham on Friday as Rachael Blackmore, the most successful female National Hunt jockey of all time, continued to rewrite the history books, this time by becoming the first woman to win the Cheltenham Gold Cup. Her willing and sublimely talented partner was A Plus Tard (Fr) (Kapgarde {Fr}), who was runner-up to his stable-mate Minella Indo (Ire) (Beat Hollow {GB}) last year but turned the tables in emphatic fashion this time around. Tackling the defending champion for the lead over the final fence, the 8-year-old...