In-form striker Takashi Usami capped a memorable week with a brace as Japanese treble winners Gamba Osaka defeated visiting Nagoya Grampus 3-1 in the J. League on Friday night.

Usami, who opened his Japan account on Tuesday in a 5-1 friendly win over Uzbekistan in Tokyo, broke the deadlock with a deflected effort in first-half stoppage time and then steered home the second with national team coach Vahid Halilhodzic watching from the stands at a rain-soaked Expo Stadium.

Kensuke Nagai pulled one back for Grampus midway through the second half but Yasuyuki Konno added the third for Gamba to complete victory 10 minutes from time.