John Oldham was born on November 6, 1932 in Gilroy, California, USA. He was married to Maryann. He died on February 24, 2024 in San Jose, California, USA.
Was the first Humboldt Crabs player to play in the Major Leagues.
From 1965 to 1966 he coached baseball at California's Westmont High School.
From 1985 to 1997 he coached the Broncos of Santa Clara University, leading them to four NCAA appearances and three West Coast Conference championships. His final record at Santa Clara was 433-324-6, a .571 winning percentage.
Was a three-year letter winner at San Jose State University from 1952 through 1954 attending on a baseball scholarship.