Saturday's meeting at Wetherby has been abandoned due to a frozen track and joins Sandown on the casualty list. Ffos Las are inspecting in the morning.
Tim Long, clerk of the course at Ffos Las, covered the track earlier in the week in a bid to safeguard the fixture, which features the Welsh Champion Hurdle. However, frost has crept under the covers after a chilly night and Long will check conditions at 9am.
"We had a sharper frost than expected last night, minus 5C verging on minus 6C at its worst. Unsurprisingly it does feel a bit frozen under the covers," he said.
"We are forecast a dry and clear day, with a maximum of 2C or 3C, and then it is due to remain clear into the night with the temperature dropping to minus 1C or 2C. Cloud cover is then forecast with some rain, but it's a question of how soon that comes in so we will look at 9am, when we will have a better idea."
