changes to Kentucky Derby points

Aidan O'Brien has never won the GI Breeders' Cup Classic. But it hasn't been from a lack of effort. He's had 13 starters in the race and has run some very good horses, including Galileo (Ire) (Sadler's Wells) and Giant's Causeway (Storm Cat). But his luck could very well change this year as he will take aim at the Classic with one of the best horses of this generation. The O'Brien trained City of Troy (Justify) has had an outstanding campaign in Europe, winning six of seven starts, including four...