Saiki was born in Yamanashi Prefecture on August 20, 1970.
After graduating from Aoyama Gakuin University, he joined Yokohama Marinos in 1993.
In 1995, he moved to his local club Ventforet Kofu in Japan Football League.
He named a captain and played as regular player as defensive midfielder.
This biographical article related to a Japanese association football midfielder born in the 1970s is a stub.