Hibernian fell to a 2-0 friendly defeat against Union Berlin in Germany on Tuesday night.
Hibs played well in an even first half and Leigh Griffiths saw two efforts saved but the home side took the lead five minutes after the break through a header following a free-kick.
The Scottish Cup runners-up, who brought on trialist Alan Maybury after 70 minutes, came under increasing pressure and goalkeeper Ben Williams made several good saves but was beaten from close range in injury-time.
Dundee United won 2-0 at Alloa with Johnny Russell grabbing a goal in each half.
St Mirren fielded former Rangers youngster Grant Adam in goal for a goalless draw at Dumbarton.
Adam is trying to win a deal as back-up to Craig Samson and featured in a youthful Saints side that was supplemented by experienced players such as Gary Teale and Darren McGregor.
Elsewhere, Inverness lost 2-1 at Brechin despite taking the lead through Graeme Shinnie.