The ballpark scenes were filmed at Federal League Park, also known as Washington Park, in Brooklyn. The park was home to the Brooklyn Tip-Tops of the Federal League and was located at the corner of 4th Avenue and 3rd Street in Brooklyn.
A print of this film survives in the UCLA Film and Television archives.
The 'famous' pitcher's name "Matty Christheson" is clearly a take-off on the great New-York Giant pitcher Christy Mathewson (whose nickname was Matty). Despite the intertitle, it's a fictional name.