Shiozawa first played club football at Meiji University, before professionally debuting in the Japan Soccer League in 1970 for Nagoya Bank.
Immediately after retiring from playing in 1975, Shiozawa replaced Okubo as head coach for Eidai SC.
[3] Shiozawa then took an eight-year hiatus from soccer, before returning to coach the football club at Meiji University.
In 1986, he began coaching ANA Yokohama, which had just been promoted to the first division of the Japan Soccer League.
He briefly returned in December 2005[6] and January 2006,[7] as coach of the Nepal national football team.