I enjoyed Jack Genero's 1971 porn film CLIMAX, but his timid attempt at a roughie SAN FRANCISCO BALL is terrible. Contrary to the pidgin English, highly misleading previous review posted on IMDb, it has nothing to offer.
It's about a kidnapping, with details completely garbled by poor storytelling. The sister of the kidnapped girl gives a horrendous performance, meant to fool the other characters (and the audience) into thinking "everything's all right".
The thugs abuse the kidnapped girl and her best friend from L.A. who's traveled to S.F. to be with her and ends up searching for her. With obvious red paint splashed all over the women, fake "cuts" by a blade and idle slapping around, this softcore rough action is unconvincing and unexciting. Similarly, the sex scenes are shot softcore and have zero arousal impact.
Hero is played by porn vet Gerard Broulard, who is far less interesting than usual. The touted action scenes are completely inept. A backyard elementary school movie project with cap pistols would probably be far more effective than the "clutch one's tummy" amateur shootout climax staged here in an auto junkyard.
Simplest scenes and connectives, such as the heroine's lost purse leading the hero to finding her, are completely bungled. Even the most basic details of the kidnapping plot make no sense whatsoever. Why this was shot softcore is beyond me -it reeks of 1-day storefront wonder designed just for displaying explicit sex.
The "Inspector Mitchell" who shows up at the finale looks like Charlie Sheen. Previous poster identifies the actor as being one of the Mitchell Bros., and sure enough, Sheen played Artie Mitchell in the TV movie "Rated X", but I cannot confirm the identity of these cameos.
Final dialog reads: "I guess it's all over now"; "I sure hope so", inadvertently summing up the audience's reaction.