Manchester United's Henrikh Mkhitaryan was on target for Armenia, while Germany cruised and the Home Nations won.
Germany will look to continue their perfect start in the World Cup Qualifiers when they travel to Azerbaijan on Sunday, live on Sky Sports.
Take a look back at a busy Sunday of World Cup Qualifiers which featured England, Scotland, Northern Ireland and Germany.
Poland's most-capped goalkeeper Artur Boruc has retired from international football at the age of 37.
Watch the dramatic moment Robert Lewandowski fell to the floor after a flare exploded near him in Poland's clash in Romania.
From Argentina to Australia, read our World Cup qualifying update ahead of this week's internationals...