Based on fourth-round evidence, top-flight Falkirk should be aware of banana skins when they go to Stenhousemuir – live on the BBC – in the weekend’s final tie on Sunday (19:30 GMT).
Gary Naysmith’s side, currently challenging at the top of the third tier, dismantled Championship Greenock Morton by four goals at Ochilview in the previous stage.
John McGlynn’s men, who have defied the odds in the Premiership this season, will be a step up in class, but the League 1 hosts will have a fearless approach having lost just one of their past nine.
Among the 15:00 kick-offs on Saturday, Dundee United welcome Spartans. Despite being out of form, it seems unthinkable that the top-tier club would lose at home to the fourth-tier leaders.
However, United boss Jim Goodwin reminded BBC Scotland of his rough record against lower-league sides following a late 3-2 defeat at Hibernian on Wednesday.
“I don’t think there’s any manager in the country that needs to be warned about teams from the lower leagues more than myself,” he said. “I go to bed thinking about it every night.”
Goodwin’s United suffered defeat at Spartans in July 2023 in the League Cup groups, and it was his Aberdeen side that infamously lost at sixth-tier Darvel in the Scottish Cup six months prior.