Koback was the youngest Pittsburgh player ever at 18 years and 10 days old when he made his MLB debut .
In both of his at - bats he had over the night , Koback went hitless against St. Louis pitcher Harvey Haddix .
Koback was the youngest Pittsburgh player ever at 18 years and 10 days old when Koback made Koback 's MLB debut .
In both of his at - bats he had over the night , Koback went hitless against St. Louis pitcher Harvey Haddix .