Japan coach Ivica Osim has issued a must-do-better warning and accused his players of "playing for the papers" in Friday's uninspiring 2-0 win over Montenegro in the opening match of the three-nation Kirin Cup.
Yuji Nakazawa became the first Japan defender to reach double digits with his 10th national team goal and in-form striker Naohiro Takahara completed the victory in the 38th minute with his second goal in as many games in the Asian Cup warm up at Shizuoka Stadium Ecopa.
But despite the result, Japan looked desperately short of ideas against a poor Montenegrin side and an assured display from wing-back Yuichi Komano was the only bright spot in one of its most disjointed performances under Osim.