Goals from Marco Reus and Thomas Muller gave Germany victory over Georgia while Portugal beat Serbia to go top of Group I.
Germany beat European champions Spain 1-0 in Tuesday night's friendly thanks to a late goal from Toni Kroos.
Dick Advocaat became the third international manager to leave his post on Saturday after resigning as Serbia head coach.
Denmark eased the pressure on coach Morten Olsen with a come-from-behind 3-1 victory over Serbia.
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Portugal coach Fernando Santos has opted for experience for his side's Euro 2016 qualifier against Armenia on Friday.