Sakashita was born in Miura on May 6, 1959. After graduating from University of Tsukuba, he joined Japan Soccer League club Fujita Industries in 1982. He played as regular player at the club. However, the club was relegated to Division 2 in 1990. He moved to Yomiuri in 1990 and retired in 1991. He played 161 games and scored 5 goals in the league.