<Li> Race changes: Added two races (Iroquois Stakes; Jerome Stakes) and removed four others (Royal Lodge Stakes; CashCall Futurity; Sam F. Davis Stakes; Derby Trial Stakes). </Li> <Li> Points system changes: Reduced the points for the wild card from 20--8--4--2 to 10--4--2--1 . </Li> <P> The 2015 season consisted of 35 races (19 races for the Kentucky Derby Prep Season and 16 races for the Kentucky Derby Championship Season). </P> <Ul> <Li> Race changes: Added one race (Los Alamitos Futurity). </Li> </Ul>

What are the qualifications for a horse to enter the kentucky derby