It's Chuck Connors at an early age.. some say this man is not tall as Chuck but you can't go by that because the other man could have been tall too.. what's the chances of two different men with the same facial features, square jaw, chin and left handed going to be, yes it's him.
Based on hair, jaw, and chin, I would say that is Chuck Connors. It would have been helpful if the cameraman had been about 30 feet closer to the action.
Great fuck! Very naturalistic. A damn shame this print is on its last legs. If there is a better print from the '70s I'd love to see it. Is it Connors? Height, build and general facial structure are certainly similar, but similar doesn't make it so. Either way, this "Chuck" certainly has wood!