Two more Premiership Colt teams dropped out of the first round of the Challenge Cup on Wednesday night.

Rangers and Dundee's youth sides will take no further part, joining Celtic, Hibernian, Kilmarnock and St Johnstone's colts on the sidelines after they were also knocked out on Tuesday.

Rangers U20s lost 2-1 to Dumbarton, with Calum Gallagher and Mark Stewart scoring for the home side.

Ryan Hardie pulled one back with 18 minutes to go but it was too little too late in torrid conditions.

Dundee managed to mount a two-goal comeback when they were trailing 3-0 to Alloa but Craig Malcolm struck an 89th minute goal to sink them 4-2.

There was joy for Motherwell's youngsters, however, as they beat Queen's Park 2-1 at Stirling Albion's Forthbank.

Ayr United continued their outstanding form this season with a 5-1 win over East Stirlingshire.

Craig Moore netted his eighth goal of the campaign and the club's 28th in eight games.

Hibernian are the only team to defeat Ayr this season.

Catch up with Tuesday's first round results here.

The draw for the second round will be held at 1pm on Thursday.