Twenty two SPFL clubs are in Scottish League Cup action this evening.
Queen's Park and Rangers meet in a delayed first-round tie at the Excelsior Stadium, with the winners at home to Inverness Caley Thistle in round two on a date to be confirmed.
The remaining second-round games all go ahead tonight, with an eagerly anticipated Ayrshire derby at Rugby Park. It is the first meeting between Kilmarnock and Ayr United since Killie won 1-0 in the League Cup semi-final at Hampden in January 2012, en route to beating Celtic.
Allan Johnston's men go into the game on their new artificial surface on the back of a 2-0 home win over Motherwell while Mark Roberts' team are top of League 1 with three wins out of three and defeated Forfar 2-0 at Somerset Park at the weekend.
St Mirren, who won the League Cup in 2013, are looking to put a poor start in the Premiership behind them when they entertain a Dunfermline side who beat Airdrie 3-0 on Saturday.
Hamilton Accies are bidding to take their fine league form into their clash with Alloa at New Douglas Park. The Wasps got their first Championship victory of the season at the weekend when they beat Cowdenbeath 3-0.
Ross County make the 270-mile journey to Stranraer looking to avoid another upset, having lost 3-2 at Stair Park to Stevie Aitken's League 1 outfit 12 months ago.
Dundee, unbeaten since promotion to the Premiership, take on Raith Rovers at Dens Park. The Kirkcaldy club knocked the Dark Blues out of the Scottish Cup last season and drew 0-0 on their last visit to Tayside in March.
Stenhousemuir, beaten 5-4 by Stirling Albion on Saturday, welcome Hearts to Ochilview. Robbie Neilson's men have a perfect record in the Championship but lost at Livingston in the Petrofac Training Cup last midweek.
Ian Murray returns to Easter Road as his Dumbarton side face Hibernian, with both teams having lost at the weekend. Hibs went down 1-0 at home to Falkirk and the Sons lost 4-1 at Ibrox.
Falkirk and Cowdenbeath meet in another all-Championship encounter at The Falkirk Stadium, with the sides having drawn 2-2 at Central Park earlier this month.
Livingston and Queen of the South square up at the Energy Assets Arena, having already met twice this season. Livi won at Palmerston in the Petrofac Training Cup and it was 1-1 in the Championship in Dumfries on Saturday.
Jim Duffy's League 1 Morton entertain Partick Thistle at Cappielow on the back of a 2-1 win at Peterhead on Saturday while the Jags lost 2-1 at home to Hamilton Accies.
The draw for the third round of the competition takes place at Pittodrie Stadium - home of current holders Aberdeen - on Wednesday at 1pm.