Dundee United’s bid to advance from the Scottish League Cup group stage is in doubt after a shock defeat to third-tier Montrose.
Jim Goodwin’s Premiership side, who needed a stoppage-time penalty to edge past Stirling Albion on Saturday, were beaten by a first-half strike from Graham Webster at Links Park.
Falkirk were also upset as Kevin Holt’s goal earned second-tier Ayr United a victory away to John McGlynn’s men.
McGlynn’s team, who missed a penalty, began their group campaign with a 5-0 win at Edinburgh City last weekend but now sit second in Group G behind Ayr.
Elsewhere, Stephen Robinson’s revamped Aberdeen, Dundee and St Johnstone all recorded wins, while Kilmarnock were held by Raith Rovers before taking a bonus point in a penalty shootout.