This image depicts the aftermath of a scuffle between the Boston Red Sox and St. Louis Browns c. 1915 at Sportmans Park in St. Louis. The umpires, or perhaps policemen, are shown restraining the players.
Depicted left to right are:
Burt Shotten? of the St. Louis Browns, Heine Wagner of the Boston Red Sox, Herb Pennock of the Boston Red Sox, HOFer Bobby Wallace of the St. Louis Browns, Pinch Thomas of the Boston Red Sox, Jack Berry of the Boston Red Sox, Ernie Shore of the Boston Red Sox and perhaps Joe Wood of the Boston Red Sox.
It is rare to find a close up image of an altercation on a Major League field of play during the Deadball Era.