Here's a quick sample of the kind of thing you can do in 5 minutes.
This is Jockey performance for riders that had a minimum of 25 mounts on favorites at AQU, BEL and SAR. This covers about 2 1/2 years. Doing it by rank will take a little longer. Something like this could also obviously be broken up by track, distance, surface, running style etc...
The average for all NYRA jockeys was 2.83.
So anything lower than 2.83 would be positive and anything higher would be negative. You can also see the average odds of the favorites the jockey ride to make an adjustment there.
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