This is one of fifty films from the DVD collection "Treasures From American Film Archives" and like most of the films, it's an ephemeral piece that would have otherwise been forgotten. It consists of players from the Negro Leagues warming up at Crosley Field (home of the Cincinnati Reds). Much of it features Reece Tatum and is reminsicent of a baseball version of the Harlem Globetrotters. This is NOT at all surprising, as Tatum actually played in both worlds--with the Negro Leagues during the summer and touring with the Globetrotters in the off-season. Who originally filmed this is uncertain but it was made in the 1940s before the Major Leagues were integrated.
Because of the sort of film this is, it's impossible to rate but also a very valuable piece of history as well as the black American experience--especially since such footage normally wouldn't have made it to theaters or been seen by anyone other than the person taking the footage in the first place as well as their friends and family.