On June 25, 1904, the Concord Marines of the Class B New England League brought their nine-year-old mascot into the game after the ejection of the team’s centerfielder and their second baseman becoming ill. Diggins thus became the youngest professional player in the history of the game. However, the youngster did not have an opportunity to field any balls playing right field, and he struck out in his only at-bat in the contest played at Alumni Field (also known as Spalding Park).
Diggins may not have had the opportunity to impress, but his appearance in the game did earn him a sparsely populated Baseball Reference page.
So he was arbitration eligible before he needed to shave?