How old were they?

Billy O'Brien

1B · Born March 14, 1860

Age in each season

1. 1884 (White Caps, Cowboys): 24 years, 18 days to 24 years, 201 days
2. 1887 (Nationals): 27 years, 18 days to 27 years, 201 days
3. 1888 (Nationals): 28 years, 18 days to 28 years, 201 days
4. 1889 (Nationals): 29 years, 18 days to 29 years, 201 days
5. 1890 (Gladiators): 30 years, 18 days to 30 years, 201 days