The loss to Switzerland means their hopes of reaching Qatar are all but over.
Northern Ireland boss Ian Baraclough says he's "annoyed and appalled" about the red card Jamal Lewis received in a 2-nil World Cup qualifying defeat in Switzerland.
The defender was shown a second yellow card for time wasting on a throw-in.
It was goalless at the time - and the loss means their hopes of reaching Qatar are all but over.
Elsewhere, England were 5-0 winners over Andorra.
Scott McTominay scored a late winner for Scotland as they beat Israel 3-2.