fkach –
The weekend\'s events seem to have narrowed your problem, at least as it relates to this year\'s Derby, to Colonel John (although Bob Black Jack is still a possibility). Since he was bet heavily in the futures pool and is in the top 3 on most pundits\' lists of Derby contenders, you\'re not going to get any value from including Colonel John. You\'ve got to either stick to your guns and toss him or find your value elsewhere.
On the side of tossing him:
I note that both Zenyatta and Heatseeker got wide trips Saturday at Oaklawn, thus keeping them away from potentially problematic kickback. That strategy may not be viable for a closer in a 20-horse field.
Winstar sent Colonel John to California. They must have thought that synthetics would suit him.
Gomez and Anderson chose to ride Court Vision on Saturday rather than stay on Colonel John. (I\'m not particularly fond of this argument. I think the choice may have related to other mounts lined up at the Big A on Saturday and Gomez\'s transition back to the East for the summer. Also, Winstar may also have preferred to give Colonel John back to Nakatani rather than find a new rider for Court Vision.)
If you are looking for the fastest dirt horse, it\'s most efficient to test the candidates on dirt. To explain using an analogy: if you were looking for fast human sprinters, you wouldn\'t measure them by having them compete in the long jump. Admittedly, the fastest guy would probably rate high in the long jump, and (since the athletic ability required is similar) might well be the best long jumper, but you\'d rather compare them by having them run the hundred.
On the flip side:
I still hypothesize (without meaningful data to support my hypothesis) that the TG scale may be a bit narrower on synthetics than it is on dirt, so that when top horses move from synthetic to dirt (and they handle the move) their top figs improve. Conversely, when they move from dirt to synthetics, they are unlikely to reproduce their dirt tops (even when they handle the move). If my hypothesis is right, then in preparing the statistics you are asking for, it might alter the outcome if TG were to throw claimers in with the stakes and allowance horses.