How old were they?

Fritz Von Kolnitz

3B · Born May 20, 1893

Age in each season

1. 1914 (Reds): 20 years, 316 days to 21 years, 134 days
2. 1915 (Reds): 21 years, 316 days to 22 years, 134 days
3. 1916 (White Sox): 22 years, 317 days to 23 years, 134 days