Sagan Tosu beat Yokohama F. Marinos 2-1 on Saturday to keep former Australia manager Ange Postecoglou waiting for his first J. League win.
Cho Dong-geon put Tosu ahead in the 12th minute after some poor defending from the home team at Mitsuzawa Stadium, before Colombian Victor Ibarbo doubled the visitors' lead from the penalty spot 12 minutes into the second half.
Portuguese striker Hugo Vieira managed to pull a goal back for Marinos in the 87th minute, but it was not enough to prevent a second defeat in three league games under new manager Postecoglou, who took over from the departing Erick Mombaerts over the winter.