A 6'3, 180 lb. player from Richmond, California, he played minor league baseball in the New York Yankees organization before being acquired by the Athletics in the rule 5 draft. Christopher joined the Athletics' major league roster in 1942 and played six seasons for them, and made his only All-Star appearance in 1945. He was traded to the Indians before the 1948 season, and played one year of baseball with them. After the season ended, he retired due to health concerns and worked at an aircraft plant until his death in 1954.