Unwanted stress for the Silver Ferns coaches ahead of next month's Netball World Cup in Liverpool

Defender Katrina Rore will sit out the four team tournament starting in Auckland tomorrow due to a calf strain.

Assistant coach Deb Fuller says they have no idea how bad the injury is.

She says Rore is getting an assessment done today and management will get a medical report given to them tonight.

Deb Fuller says a call on Katrina Rore's participation in the World Cup will be made next Monday.