Thursday's meeting at Fontwell has been abandoned because of a waterlogged track.
Clerk of the course Edward Arkell confirmed that with several areas of the course already untraceable, he had no option but to call off Thursday meeting.
It was a dry night in East Sussex but the course is showing no signs of improvement.
Arkell said: "We were dry overnight but unfortunately three or four areas of the track are still waterlogged and we're forecast another 10 to 12 millimetres of rain tonight.
"It's disappointing as a lot of the track is raceable and it looked in really good shape on Friday, but we've had two inches of rain since then."