The present system of race grading was introduced in 1971, and for a period the Challenge Stakes held Group 3 status.

The current system of race grading was introduced in 1971, and the Diadem Stakes initially held Group 3 status.

The present system of race grading was introduced in 1971, and for a period the July Stakes was classed at Group 3 level.

The present system of race grading was introduced in 1971, and the event was given Group 3 status.

The present system of race grading was introduced in 1971, and the event was classed at Group 3 level.

The present system of race grading began in 1971, and the Prix d'Ispahan was classed at the highest level, Group 1.

The autumn race was abolished 1984 when Japanese domestic race grading was started.

The present system of race grading was introduced in the early 1970s, and for a period the St. Leger Italiano held Group 2 status.

The present system of race grading was introduced in 1971, and the July Cup was initially classed at Group 2 level.

The present system of race grading was introduced in 1971, and for several years the event held Group 2 status.