From 1999-2000, Hideaki Tominaga played for J2 League club Nagoya Grampus Eight (based in Nagoya, Aichi Prefecture), then in 2001 he started playing for J1 League club Sagan Tosu.
From 1999-2000, Hideaki Tominaga played for J2 League club Nagoya Grampus Eight (based in Nagoya, Aichi Prefecture), then in 2001 he started playing for J1 League club Sagan Tosu.