Do you have stats or have you posted previously how many triple crown winners and the percentage of horses that ran against them in all three legs? Im sure the percentage was higher going back many years.
Happen to have this handy. Can't tell you prior to this
73 1 1 1 Secretariat
2 2 5 Sham
77 1 1 1 Seattle Slew
2 3 2 Run Dusty Run
12 6 7 Sir Sir
78 1 1 1 Affirmed
2 2 2 Alydar