The decision was taken following heavy rainfall
Tomorrow's fixture at the Curragh has been postponed due to the adverse weather conditions.
Officials at the Curragh were forced to cancel following 21mm of rain last night, with the course currently unfit for racing and facing an unfavourable weather forecast.
At Clonmel, the ground is heavy but currently fit for action ahead of racing on Thursday.
However there will also be an inspection ahead of Thursday's meeting at Clonmel.