As a Major League Baseball outfielder, he played parts of two seasons in the majors, debuting in 1940 for the Washington Senators, then returning in 1945, which he split between the St. Louis Cardinals and New York Giants.

Mallory was the head football coach at Elon University from 1948 to 1952, compiling a record of 28–18–3.

[4] The following is a table of James Mallory's yearly records as a head football coach.

[5] The following is a table of James Mallory's yearly records as a head baseball coach.

This biographical article relating to a college football coach first appointed in the 1940s is a stub.