Drawing on torn-from-the-headlines events and B-movie history, Hill and his co-writer, David Giler, fill out their premise with hardboiled irony and gusto.

A forgettable prison boxing movie.

With flashbulb editing as cover for the absence of narrative continuity, Undisputed is nearly incoherent, an excuse to get to the closing bout ... by which time it's impossible to care who wins.

Despite its setting, the movie admirably stays away from the usual stereotypes found in practically every prison flick.