At least two of the eight first-round groups of four produced tough obstacles for their participants to progress to the knockout rounds.
IMAGES from the FIFA World Cup qualifiers played across Europe on Sunday
Holders Spain suffered their first defeat in qualifying for a major tournament in eight years when Miroslav Stoch nodded a late goal to earn Slovakia a shock 2-1 victory in Euro 2016 Group C on Thursday.
15 photographs that prove we live in an odd, odd world!