It has been a highly encouraging start to the year in Britain for the select racing interests of Mary Slack, whose colours have been carried to glory by the G3 Winter Derby winner Sky Safari (Zoustar) and last Saturday by her half-sister, the Listed Snowdrop Fillies' Stakes winner Pina Sonata (Pinatubo). The owner-breeder runs an altogether larger operation in South Africa, where she owns Wilgerbosdrift, one of the country's largest stud farms based in the Western Cape. She and her daughter Jessica Slack-Jell are also credited with stepping in to...