Motherwell’s match against Celtic on 6 January has been postponed following the death of Phil O’Donnell.
The club’s skipper died shortly after suffering a suspected heart-attack during Saturday’s game againt Dundee United.
Motherwell’s SPL game with Hibernian, scheduled for Wednesday, has already been called off, as has Gretna’s match against St Mirren on the same day.
“We understand from Phil’s family that they would appreciate it if the Motherwell v Celtic game could be postponed,” SPL chairman Lex Gold said.
“Both clubs are happy to meet the request and we have called the game off.”
Gold added: “It is clear that Fir Park has become a place of homage for many fans of Phil.
“Sensitive to this, Gretna (who currently share Motherwell’s ground) and St Mirren have agreed with the SPL that the game should be postponed.
“The four other games on Wednesday will proceed as planned with the clubs being invited to honour Phil’s memory before the start of those games.”
Motherwell manager Mark McGhee backed the decision to cancel his team’s next two fixtures.
“Our players in particular are so close,” he said.
“It has been well-documented how few we have used this season and that is something that brings them together. There is a unity about them.
“Phil was a figurehead to them. He was not just any player, he was the focal point and the senior member of the squad.
“For any of us to contemplate going on a training ground, never mind a football ground, at this moment is impossible.
“We are all going to need time to get back to work.”