James Ivan Miller was born on December 31, 1898, in
Hamilton, Ontario, to parents James Miller and Mary Rosanna Storey. His father was born in England, and immigrated to Canada. In early life, Miller played multiple sports at the
YMCA, including basketball, football, hockey, and soccer. Miller was a right-handed
pitcher, stood tall, and weighed . He began playing amateur baseball in Hamilton, for the Bayviews in 1917. Despite being a pitcher, Miller was a hard-hitting batter and near the top of the league in
batting average during the 1920 season. His only loss in the 1920 season with the Plowites came in an 11-
inning game due to
fielding errors, on route to winning the
Ontario Baseball Association. While in Hamilton, Miller was nicknamed Ivan "the Terrible". Planning to join the
Buffalo Bisons of the
International League for spring training, Miller hoped to turn professional in the 1921 season. Reporting to Portsmouth's player-manager
Jim Viox, Miller wrote that he was welcomed with open arms, and won his first game, giving up only five infield hits and
striking out ten batters. In five games with Portsmouth, Miller had
two wins and one loss, and pitched 31 innings. Portsmouth turned Miller back to Buffalo late in August, and he returned to Hamilton due to an injury while pitching. He was sent home early in April, for assignment to a
farm team since Buffalo had ample pitching. He reported to the
Brantford Brants in the
Michigan–Ontario League, but was released after a try out. He joined the
Port Huron Saints in May, where he pitched briefly before his release. He unsuccessfully tried out with the Hamilton Tigers in the Michigan–Ontario League, then finished the season pitching for
Watford in the
Lambton County Baseball League. Not recovering from his injury until late in 1922, Miller turned down an offer from the Hamilton Tigers in August. After his playing career, Miller worked regularly as an
umpire for the 1929 and 1930 amateur baseball seasons in Hamilton. ==Journalism and broadcasting==