Aberdeen striker Lawrence Shankland has joined St Mirren on loan until the end of the season.
Premiership Dundee, Hamilton and Partick were all dumped out of the Scottish League Cup at the second round stage.
Mark Warburton's Rangers will be at home to holders Livingston in the last eight of the Petrofac Training Cup.
Queen of the South won 1-0 at Livingston in the Scottish Championship on Saturday, as Hibernian saw off Morton by the same scoreline.
St Mirren recruit Jamie Langfield on a two-year player/coach deal after he left Scottish Premiership side Aberdeen.
Mark Warburton was happy to see Rangers win again but feels they can be even sharper up front.
Lee Wallace’s double helped Rangers to a winning start in their bid for the Scottish Championship crown as they defeated St Mirren.
Team news for the Championship fixture between Rangers and St Mirren at Ibrox on Friday evening.
More of the games that matter on Sky Sports
Listen to the latest Premier League news
Download for exclusive interviews and pundit previews
All the gossip from the morning editions
Check out all the latest transfer moves