Waist-length portrait of Christy Mathewson, one of the greatest pitchers of the Dead Ball Era in baseball, taken on the field at the Polo Grounds in New York City. He looks directly into the camera and assumes a relaxed, informal pose with his hands resting on his belt. He wears a New York Giants pinstriped, home uniform lettered with an overlapping "NY" on the left sleeve, his cap and a glove on his left hand. Stadium stands and advertising billboards are visible in the background.