Brazilian goal-machine Adriano made it seven goals in just two AFC Champions League games on Tuesday as FC Seoul destroyed Sanfrecce Hiroshima 4-1 to take a firm grip on Group F.

Adriano, who smashed four in last week's 6-0 demolition of Buriram United, plundered another hat-trick as the Korean FA Cup-holders roared back from a goal down.

After Kazuhiko Chiba's opener for Hiroshima, Kim Won-Sik equalised for the hosts just after the half-hour, before Adriano grabbed his treble in 20 second-half minutes.

The Brazilian put Seoul ahead in the 49th minute when he let a free-kick drop over his shoulder and delicately steered a sumptuous volley into the Hiroshima goal.

He showed his predatory instincts with a determined run and near-post finish on 55 minutes, and completed his hat-trick after another flowing team move in the 69th.

After a ball across the box from Spanish defender Osmar Barba, Sin Jin-Ho's backheel found the on-rushing Adriano and the free-scoring forward swept home Seoul's fourth.

Adriano remained a danger in the final minutes and ex-Arsenal forward Park Chu-Young also came close with a free-kick which curled just wide.

After two games, FC Seoul top the nascent Group F on maximum points and three ahead of China's Shandong Luneng, who have a later kick-off against Thai outfit Buriram.