SAITAMA — Japan and Colombia played out a dour 0-0 draw on Tuesday in the last home match for Ivica Osim's men before the Asian Cup finals, leaving the national team coach with even more questions than answers ahead of the July 7-29 tournament.

News photoJapan midfielder Shunsuke Nakamura battles Colombia defender Javier Arizala during the first half of their Kirin Cup match on Tuesday at Saitama Stadium 2002. The match ended in scoreless draw. KYODO PHOTO

Japan may have won some silverware — even if it was only the Kirin Cup — by virtue of having scored one goal more than Colombia in the sides' games against Montenegro, but with the likes of playmaker Shunsuke Nakamura woefully out of sorts and the Europe-based players Junichi Inamoto and Koji Nakata anonymous there is a lot for Osim to ponder.