Education
A native of Osaka, Kashio graduated from Tokyo Higher Commercial School (now Hitotsubashi University), and was subsequently employed by the trading company Mitsui & Company and stationed at that company’s New York branch office.
柏尾誠一郎
A native of Osaka, Kashio graduated from Tokyo Higher Commercial School (now Hitotsubashi University), and was subsequently employed by the trading company Mitsui & Company and stationed at that company’s New York branch office.
He competed in the 1918 United States Open, finishing in the third round. He also participated in the 1919 United States Open, finishing in the second round. At the 1920 Summer Olympics held in Antwerp, Belgium, Kashio was defeated in the third round of the singles competition.
In the doubles final, Kashio and Kumagae lost to Oswald Turnbull and Max Woosnam of Great Britain: 2–6, 7–5, 5–7, and 5–7.
He subsequently partnered with Zenzo Shimizu in the 1923, reaching the semi-finals. He appears to have retired from competition soon thereafter, and little is known of his subsequent career.