Hyacinth - Reliable predictions for racers with the highest odds.
Water Lily - Marks all the racers who will take the same place their odds suggest.
Nazuna - At least two out of the three racers she marks will be in the top 3.
RESULTS: x50, x20, x10, x100, x30
It seems the results suggest that Hyacinth's predictions hit the mark unless something directly contradicts them.