Alvaro Morata scored as Spain beat Ukraine 1-0 in Friday's European Qualifiers, while Slovakia won to stay top of Group C.
Germany beat European champions Spain 1-0 in Tuesday night's friendly thanks to a late goal from Toni Kroos.
Spain took the first steps on the road to recovery from their World Cup woe with a 5-1 win over Macedonia in Valencia.
UEFA have approved the launch of a Nations League from 2018, with the new tournament to be played every second year.
Find out more about Sky Sports' live coverage of 250 European Qualifiers this season.
Romania pipped Turkey to second spot in Group D and a place in the World Cup play-offs by defeating Estonia 2-0.