Produced by low-budget legend Al Adamson, HAMMER is an unimaginative but modestly entertaining boxers-and-mobsters picture with suitably dingy ambiance.
Spotted beating the tar out of a thuggish co-worker on the docks, B.J. Hammer (Fred Williamson) is recruited as a boxer for Big Sid (Charles Lampkin), local front for the syndicate. Quickly fighting his way through the ranks, Hammer is dogged by a cop named Davis (Bernie Hamilton), who warns him
that Sid is crooked and his fights fixed. Racked with self-doubt and spurned by his former buddies who now see him as a member of the bourgeoisie, Hammer hears that his trainer, the Professor (Mel Stewart), is being beat...