He played in Nippon Professional Baseball for the Orions franchise.
[1] As a high school baseball player, he participated in the Kōshien tournaments alongside batterymate Sadaharu Oh in 1956.
[2] When Daigo made his Nippon Professional Baseball debut in 1957, his team was called the Mainichi Orions.
[2] He died in Tokyo of acute myeloid leukemia on 11 December 2019, aged 81.
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