In 1984 season, he was selected Rookie of the Year awards and Best Eleven.
He played 112 games and scored 36 goals in Japan Soccer League.
After retirement, in 1993, Sekizuka became assistant coach for Kashima Antlers under manager Masakatsu Miyamoto.
From 2013, he managed Júbilo Iwata (2013) and JEF United Chiba (2014-2016).
This biographical article related to a Japanese association football forward is a stub.