Masahiro Yamamoto started a game against the Hanshin Tigers and recorded a victory today, at the age of forty-six years, eight months, and four days. That broke two records: Kimiyasu Kudo's Central League record (forty-six years and one month) for oldest player to record a victory; and Shinji Hamazaki's NPB record (forty-six years, eight months, zero days) for oldest starting pitcher to record a victory.
Shinji Hamazaki holds the NPB record for oldest pitcher to record a victory (forty-eight years, four months, and twenty-seven days).
Yamamoto also tied Shigeru Sugishita's franchise record of 211 victories.
UPDATE 4/16 @ 11:4am - When Yamamoto faced Tomoaki Kanemoto (forty-four years, zero months), they became just the second pitcher/hitter combo with a combined age over 90. The other: Hamazaki (forty-eight years) and Yoshio Yuasa (also forty-eight years) on November 5, 1950.