Partick could make three changes
Partick boss Alan Archibald could be forced to make three changes to the Thistle side which kicked-off their first top-flight campaign in nine years when they welcome Ayr to Firhill.
The First Division champions drew 0-0 with Dundee United in their Scottish Premiership opener on Friday but striker Kris Doolan will miss the Scottish League Cup meeting after he picked up a dead leg while midfielder Steven Lawless (illness) and defender Aaron Muirhead (blisters) are both doubtsfor the match.
Meanwhile, right-back Jordan McMillan - who missed the clash with the Arabs - has still to recover from an ankle knock and will also sit out the game.
Ayr United manager Mark Roberts heads to the Firhill home of his former club with a fully-fit and suspension-free squad.
Youngster Alan Forrest, 16, who scored the winner in Ayr's Ramsdens Cup success over Queen's Park, will feature against the Scottish Premiership side.
Roberts said: "He is only 16 but he is a talent and will enjoy a game like this."
On the match he added: "I really enjoyed playing with Partick and I will enjoy going there in this role, especially as there is no pressure on us.
"Thistle are expected to win, so we can go give it our best and see where that takes us."