English trainer Pam Sly has been taken to Harrogate District Hospital with a suspected broken leg.
The Classic-winning handler was preparing Chicklemix to run in the opening Star Sports Cheltenham Preview Evening - 4th March Handicap Hurdle at Wetherby when she sustained the injury to her upper leg.
"As I understand it her leg or her hip has given way as she's walked her horse off the horse box, but I don't know the exact details," said clerk of the course Jonjo Sanderson.