For Duff, who was recalled to the squad recently, it was a 24th cap for his country whereas Lafferty was making his first appearance at full international, coming up against a side including Arjen Robben, Nigel De Jong, Wesley Sneijder and Robin van Persie.
The hosts won the game 6-0 and it proved to be a stroll for them ahead of the Euros which get underway in under a week's time. It really couldn't have been much tougher and Lafferty, who joins a long line of Burnley players to have been capped by Northern Ireland, it was a debut that lasted only until half time when he was replaced by Ryan McGivern.
Duff continued into the second half before giving way to West Brom's Gareth McAuley.
Northern Ireland's next game is a friendly against Finland at Windsor Park on 15th August, ahead of their World Cup qualifying campaign that gets underway in September. This friendly is just three days before the Football League season gets underway and the day after we are likely to be playing a first round Capital One Cup tie.