A total of 53 goals were scored in the 12 IRN-BRU Cup first-round ties on Tuesday.
Kevin Nisbet hit a second-half hat-trick as Partick Thistle's U20 side beat Clyde 5-0 at Broadwood while Aidan Nesbitt scored twice as Celtic's youngsters came from behind to defeat Annan Athletic 5-1 at Cappielow.
Queen's Park shrugged off the loss of a first-minute goal to beat Kilmarnock U20s 5-2 at Hampden and Arbroath beat Inverness Caley Thistle’s youngsters 3-0 in the Highlands.
Scott Wright's hat-trick helped Aberdeen's U20 side see off Formartine United 5-2 at North Lodge Park but there was better news for the other Highland League clubs.
Cove Rangers beat Dundee U20s 2-1 at Station Park, Turriff United defeated St Johnstone's youngsters 2-1 at McDiarmid Park and Brora Rangers knocked out Ross County 3-2 after extra time in Dingwall.
Motherwell's U20 team defeated Edinburgh City 2-1 at Fir Park and Hearts came from two goals down to beat Stirling Albion 3-2 at Forthbank.
Montrose won 3-0 against East Stirlingshire at Ochilview but Berwick Rangers went down 3-0 to Spartans at Shielfield.
Cumbernauld Colts take on Hamilton Accies on Wednesday evening while Rangers play Stirling University next midweek.
The second-round draw takes place this Thursday, with ties due to be played on August 16/17.