Brazilian forward Adriano added to the miseries of struggling J. League champions Sanfrecce Hiroshima on Tuesday, when he scored a second-half hat trick for FC Seoul in a 4-1 Asian Champions League group-stage win.
It was a mixed day for J. League teams, as FC Tokyo secured three points in a 3-1 Group E home win over Vietnam's Becamex Binh Duong.
Adriano has scored seven times in this year's competition, including four goals in FC Seoul's 6-0 opening-round demolition at Thailand's Buriram United. He was a constant danger on a day when Sanfrecce could not retain possession at Seoul World Cup Stadium.