DOB: 1867 -03-31 Debut: 1988-04-23 Age 121
WTF?! How could I have missed the debut of a 121 year old man in the major leagues?! My first thought was that they got the name wrong and it was actually Jamie Moyer.
Sadly, as it turns out this was an error. Bill Hallman (No relation to Bill Hall Of Fame) made his debut in 1903 at the age of 36.