from 1975, Hill's first movie as director. Starring good ol' Charly Bronson and James Coburn, the former acting as a mysterious, wandering stone-fisted brawler and the latter as a talkative pimp-like promoter.
It's in my opinion as good as The Driver but different due to aesthetics of the era and protagonist dynamic, Driver had the guy and the investigator going head to head to see who would win the bet of holding the money while Streetfighter has both being on the same team dealing with their careers and personal lives.
Also known as Hard Times
, you might've seen it already but it's still worthwhile to mention due to their script being very similar but ending with considerably different movies, does speak high of Hill's abilities that both came out pretty good even when he considers them to be part of his not-good section from his career. A strange fellow, he rarely thinks his best movies are good and gets frustrated when the trashy ones get trashed.