Career
Marcum was born on September 9, 1909, in Campbellsburg, Kentucky. Marcum entered the major leagues late in the 1933 season at the age of 23 with the Philadelphia Athletics, compiling a record of 3-2 in five appearances. He spent the next two years with the Athletics as one of their main starting pitchers.
He went 14-11 in 1934 and 17-12 in 1935.
Marcum spent 1936–1938 with the Boston Red Sox, going 8-13, 13-11, and 5-6, respectively. His European Research Area stayed relatively the same throughout the first six years in his career (between 400 and 500, roughly).
The final year in Marcum"s career, 1939, was split between the Saint Louis Browns and Chicago White Sox, mainly in relief. Marcum died on September 10, 1984 in Louisville, Kentucky.