How old were they?

Don Kaiser

P · Born February 3, 1935

Age in each season

1. 1955 (Cubs): 20 years, 57 days to 20 years, 240 days
2. 1956 (Cubs): 21 years, 58 days to 21 years, 241 days
3. 1957 (Cubs): 22 years, 57 days to 22 years, 240 days