Sebastien Pocognoli's first match as Scotland manager at Hampden got off to a terrible start after Jack Hendry was sent off.
The centre-back was initially booked, and a penalty was awarded to Switzerland for a pull on Dan Ndoye.
However, VAR intervened, and a free-kick was awarded instead, but the yellow card was upgraded to a red for Hendry after just eight minutes.
Replays showed the defender did pull back Ndoye after he had surged clear as he raced past Hendry and the high Scottish defensive line.
To make things worse, Ricardo Rodriguez lashed the free-kick into the top corner to put the visitors ahead.
Stephen Welsh was then brought on to replace Hendry in the backline, with Kieron Bowie the unfortunate player to be sacrificed by Pocognoli in the reshuffle.
Despite the disappointment, pundits were unanimous in their verdict on the decision.
Andy Halliday said on BBC Sportsound: "There is no attempt to play the ball.
"I don't know if it is a barge or he pulls him back, but there is no attempt to play the ball.
"So I think he'll be fortunate to stay on the pitch."
Willie Miller added: "There is no attempt to play the ball whatsoever."
BBC co-commentator James McFadden commented: "I'm not surprised. It was an attempt to get his leg round Ndoye.
"I just think the referee was so far away from play.
"I think regardless of whether it was a penalty ro a free kick Jack Hendry would see a red anyway.
"It was denying an obvious goalscoring opportunity, no attempt to play the ball."
