Romelu Lukaku scored twice as Belgium beat Iceland 3-0 in the Nations League on Tuesday, as Bosnia, Finland and Hungary also won.
Spain and Croatia go head to head in England's group, and World Cup bronze medallists Belgium get their Nations League underway.
Northern Ireland suffered a frustrating start to the UEFA Nations League as they were beaten 2-1 at home by Bosnia and Herzegovina.
Michael O'Neill thought Northern Ireland should have been awarded a "clear" penalty in their 2-1 home defeat to Bosnia and Herzegovina.
Look back at the reaction as Northern Ireland lost to Bosnia and Herzegovina in the UEFA Nations League.
Bosnia and Herzegovina coach Robert Prosinecki is expecting a win when he comes back to Windsor Park to face Northern Ireland.
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