The fixture details for the Premier Sports Cup quarter-final round have been released - barring the matches between Rangers and Hibs and Partick Thistle and Celtic.
The SPFL issued an update on the schedule for the quarter-final round, with matches to be played on the weekend of September 20/21.
Kilmarnock will host St Mirren in the first match of the round in a Friday night kick-off on September 19.
Aberdeen take on Motherwell at Pittodrie in the traditional 3pm Saturday afternoon kick-off time.
However, the fixture details for the matches involving Rangers and Celtic have not yet been confirmed, due to a delay to allow for the league phase draw of the European competitions.
Both Rangers and Celtic are in the Champions League play-off round and are guaranteed to play in the league phase of the Europa League even if they fail to advance.
For that reason, the SPFL have revealed the fixture details for the two remaining quarter-final matches will only be confirmed after the UEFA draw at the end of this month.
All four matches will be shown live on Premier Sports or the Premier Player.
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An SPFL update read: "The SPFL has today provided an update on the Premier Sports Cup quarter-finals, following the draw for the last eight of the competition on Saturday evening.
"All four matches will be shown live on Premier Sports or the Premier Player across the weekend of September 19-21, with a place in the semi-finals on the weekend of November 1/2 at stake. The final of the 2025/26 Premier Sports Cup will take place on Sunday December 14.
"The first of the quarter-finals will see 2012 winners Kilmarnock take on 2013 winners St Mirren at the BBSP Stadium, Rugby Park on Friday September 19, while the meeting of Aberdeen and Motherwell at Pittodrie has been confirmed for Saturday September 20, kick-off 3.00pm.
"Fixture details for the remaining quarter-finals – Partick Thistle v Celtic and Rangers v Hibernian – will be announced following the UEFA competition league phase draws at the end of August.
"Broadcast arrangements for all four ties will also be confirmed after the UEFA draws."
Premier Sports Cup last 16 fixtures
Kilmarnock vs St Mirren - Friday, September 20 - 7.45pm
Aberdeen vs Motherwell - Saturday, Sepember 20 - 3pm
Partick Thistle vs Celtic - TBC
Rangers vs Hibernian - TBC