“In the last seven years, the Kentucky Derby was won by Florida Derby winner four times, Santa Anita Derby winner twice and the Arkansas Derby winner once.”
Perhaps another way to say this could be:
“Four of the last seven Kentucky Derbies were won by California based horses that were undefeated in their 3YO season and the other three were won by Florida based horses that were also undefeated in their 3YO season.
Could it be as simple as that in the points era? I doubt it, but certainly narrows the field down quite a bit – Rock Your World is the only one that fits.
I was waiting until next week to get the TG numbers, so I do not know what the TG notation that you want to investigate is yet, but I suspect you would likely want to watch the head on of the Florida Derby. Here is a link I found to it – it might be worth the time to watch the stretch run.
2021 Florida Derby Head On