Deep Impact Tops Apex Sires

As was previewed by last August’s mid-year 2012 APEX figures, the Japanese sire sensation Deep Impact (Sunday Silence), whose first foals were only 4-year-olds of 2012, has finally toppled eight-time champion APEX sire A.P. Indy as the Leading Sire by A Runner Index during the last seven years (2006-2012, though Deep Impact has only had runners the last three of those). In 2012 alone he sired 172 winners of 272…