Scottish Premiership stars will now be required to take daily Covid-19 tests to battle a surge in cases. Scottish football's Joint Response Group has introduced "enhanced protocols" after First Minister Nicola Sturgeon expressed further concern at the rapid spread of the Omicron variant on Friday.
Top-flight clubs Dundee United and St Mirren have been struck by outbreaks this week - but their respective next matches against Rangers and Celtic are expected to go ahead.
Livingston boss David Martindale has called for a "circuit breaker" but his Hearts counterpart Robbie Neilson disagreed, insisting fans "need" the game to continue.