“We resorted to playing long balls for too long,” the Croat said. “I expected us to keep it on the ground more and we just didn’t implement the game plan.”
Kostas Mitroglou struck twice for Greece in Athens, with Dimitris Salpingidis also on target against the Romanians, who had leveled through Bogdan Stancu.
Several countries spared the ordeal of a playoff were also in action as the build-up to next year’s finals begins in earnest.
Italy and Germany drew 1-1 at the San Siro, where Ignazio Abate grabbed his first international goal for the hosts after Mats Hummels put the visitors ahead on the night their coach Joachim Loew celebrated his 100th match in charge.
England were given a jolt at Wembley as an experimental side were outclassed by Chile, for whom Barcelona striker Alexis Sanchez scored twice in a convincing 2-0 win.
Italin Fabio Capello’s Russia side were held 1-1 at home by Serbia, while Switzerland went down 2-1 to South Korea in Seoul.