Friday’s Pro14 game between Glasgow Warriors and Edinburgh has been postponed 30 minutes before kick-off.
It was the second leg of the 1872 Cup between the derby rivals after Edinburgh won 10-7 at home last week.
Glasgow had expected the game to go ahead on their artificial surface and the home side underwent a training session after their opponents left.
Injured Glasgow forward Fraser Brown told BBC Scotland he was “pretty surprised” at the decision.
“The Glasgow guys had a full training session here on Wednesday,” he told BBC Radio Scotland. “It was pretty hard but still safe to train on. We had guys doing rehab here today and it wasn’t anywhere as hard.
“Perhaps Glasgow players are just more used to it because we play on the 3G pitch every single weekend.
“They have been putting salt on it for about three days. They put that on it to stop it freezing.”
More to follow.