He served as a non-playing manager of the Tigers from 1952 until 1954, the Daiei Stars/Unions for 1956 and 1957, and the Toei Flyers for 1969 and 1970.

He also played on a team consisting of Japanese All-Stars in 1934, which played United States Major League Baseball All-Stars, including Lou Gehrig and Babe Ruth.

For the 1937 spring season, Matsuki led the Japanese Baseball League with a .338 batting average and four home runs.

1939 saw Matsuki become one of the Tigers' most valuable offensive players, leading the team in batting average, runs, hits, and walks.

[2][3] In 1940, Matsuki became the player manager of the newly named Hanshin Tigers.

This year, his offensive performance somewhat regressed, leading the team only in sacrifice flies.

[3][4] That year, Matsuki resigned after he was drafted to serve for Japan in World War II.

[5] He returned as the player manager of the Tigers in 1949, beginning his tenure in the 1950 season.