How old were they?

Johnny O'Brien

2B · Born December 11, 1930

Age in each season

1. 1953 (Pirates): 22 years, 111 days to 22 years, 294 days
2. 1955 (Pirates): 24 years, 111 days to 24 years, 294 days
3. 1956 (Pirates): 25 years, 112 days to 25 years, 295 days
4. 1957 (Pirates): 26 years, 111 days to 26 years, 294 days
5. 1958 (Cardinals, Pirates): 27 years, 111 days to 27 years, 294 days
6. 1959 (Braves): 28 years, 111 days to 28 years, 294 days