Barcelona must to wait to confirm a place in the Champions League last 16 after dropping points for the first time in Group D in an absorbing 0-0 draw at Olympiakos Piraeus on Tuesday.
Toni Kroos struck with a fierce long-range shot a minute from time to give Germany a 1-0 victory over Spain in a friendly between two injury-depleted European heavyweights in Vigo on Tuesday.
Images from the 2018 World Cup qualifiers played in Europe on Monday
Wales continued their unbeaten start to the Euro 2016 campaign as a nervy 2-1 triumph over Cyprus, after they had been reduced to 10 men, bolstered the nation's dream of qualifying for a major championship finals for only the second time.
Spain started their World Cup qualifying campaign with a crushing 8-0 win over Liechtenstein, laying down a marker in Group G with a ruthless second-half display on Monday.
Swiss qualifier Timea Bacsinszky continued to swipe past the seeds at the Wuhan Open on Wednesday by dumping World No 4 Maria Sharapova from the hard court tournament with a 7-6(3), 7-5 victory.