<page_title> Seiji Koga </page_title> <section_title> Club statistics </section_title> <table> <cell> 1998 <col_header> Club performance </col_header> <col_header> Season </col_header> <col_header> Japan </col_header> </cell> <cell> Yokohama Marinos <col_header> Club performance </col_header> <col_header> Club </col_header> <col_header> Japan </col_header> </cell> </table>
Seiji Koga joined the J1 League club Yokohama Marinos in 1998.