Hibs hammer Montrose
The Edinburgh side have had a steady start to the season but this result could provide real momentum for the period ahead.
It was target practice for Hibs; Stephen Dobbie was the most prolific player as he netted a hat-trick in the rout.
Kilmarnock were humbled, as Division One basement boys Brechin raised their game to register a fine 1-0 win - Steven Hampshire netting the only goal on 18 minutes.
Motherwell were the other SPL team to crash out of the competition, with Forfar securing a 4-2 penalty shoot-out win.
Motherwell did superbly to force extra-time, having trailed 3-1 at one stage, but it was Forfar who held their nerve better to edge a thrilling contest.
Lee Makel scored two penalties during Livingston's 3-1 win at Queen's Park.
Jim McIntyre fired in two goals as Dundee United proved too good for Greenock Morton.
Aberdeen had a comfortable evening - with David Zdrilic netting twice in their 3-1 win over Dumbarton.
To view a match summary, click on a link below
Aberdeen 3 v 1 Dumbarton
Arbroath 3 v 4 Falkirk
Brechin 1 v 0 Kilmarnock
Clyde 2 v 1 Airdrie
Dundee United 3 v 1 Morton
Forfar 3 v 3 Motherwell (Forfar win 4-2 on pens)
Hibernian 9 v 0 Montrose
Queen's Park 1 v 3 Livingston
Ross County 0 v 3 Queen of the South
St Johnstone 3 v 2 Hamilton Academical