First half goals from Brazilian forward Lucas and Japan international Yasuhito Endo gave the home side a two-goal lead at the break.

Michihiro Yasuda added a third in the 68th minute to conclude a comfortable victory for Gamba.

Adelaide are now facing an uphill battle come the second leg on November 12th.

It is worth noting that the winner will reach the 2008 FIFA Club World Cup in Japan next month.