Wednesday's meeting at Plumpton has been cancelled due to a waterlogged track.
Officials were due to inspect conditions at 0800 GMT on Wednesday, but opted to make an earlier call as they felt there was little chance of the course being fit for action.
The course said: "After 14 millimetres of rain yesterday and overnight, and further rain expected this morning, we have no prospects for improvement and so unfortunately have had to abandon today's card."