Forgive me for adding some more geeky numbers stuff, but I've been looking into the thorograph patterns more and found what I think is some interesting stuff I think. Hopefully shows what a potentially powerful tool that can be for helping you pick a Derby winner this year.
Since 2004 there's been 249 runners that have entered the Derby gates. Out of those 249, 119 of them came into the Derby on one of the positive two race thorograph patterns we've already talked about (T,P), (P,P), (T,T), and (T,P). 130 of them came into the Derby on one of the 12 negative patterns with a regressive race in one of their last two races thus with an O or X included.
- Out of the 119 that came into the Derby on one of the four positive patterns, 22 of them ran a new T in the Derby (18.5%), 30 were able to run a P to their previous top (25.2%), 20 of them ran an O race (16.8%), and 47 of them ran an X race (39.5%)
- Out of the 130 that came into the Derby on a negative pattern with having an O or X race in their last two, only 7 of them ran a new T in the Derby (5.4%), 20 of them were able to run a P to their previous top (15.4%), 36 ran an O race (27.7%), and 67 ran an X race (51.5%)
This shows how hard it is for a horse to run the best race of it's life in the Derby, but if a horse is going to do it he's more than three times more likely (18.5% to 5.4%) to do it on a positive thorograph pattern than he is if he was on a negative pattern with an O or X race leading up to the Derby. A horse on a positive pattern is also more than twice as likely (43.7% to 20.8%) to run either a new T or a P in the Derby than a horse on a negative pattern
To go back to a post I made on page 1 of this thread last year and to update it based on the results of the 2016 Derby where all three top 3 finishers had the positive patterns going in;
The top 3 finishers of the Derby from 1997 on. But when added up (1st, 2nd, 3rd)
P, T - (6, 6, 1 record)
P, P - (5, 4, 5)
T, T - (3, 2, 5)
T, P - (2, 4, 1)
T, O - (3, 0, 1)
O, P - (0, 1, 3)
O, O - (1, 0, 1)
O, T - (0, 1, 1)
T, X - (0, 1, 1)
X, T - (0, 0, 1)
Those with a (P, O), (P, X), (O, X), (X, O), (X, P) or (X, X) pattern in their final two prep races didn't produce a single top 3 finisher in the Derby over those 20 years.
Those on a positive pattern had a combined record of 16 wins, 16 seconds and 12 thirds. Those on a negative pattern had a combined record of 4 wins, 3 seconds, and 8 thirds. Those on a positive pattern going in won the Derby four times as often in that span, and finished inside the trifecta about three times as much.
Last night I only checked back to 2004, but there were a slight bit more who entered the Derby on a negative pattern as opposed to a positive one. But if we were being generous to the negative side and said it was 50/50 going back to 1997 we can see what kind of an impact value has compared to a negative pattern. Those on a positive thorograph pattern going in tend to run much better and are more successful in finishing well.
The moral of this whole story is is that if you have to make excuses for a horse's performance in one of his most recent races then you're best to look elsewhere. Not that they can't run well in the Derby. It's just a lot less likely that they do than a horse that nobody has to make excuses for going in.