Errol Flynn and Ward Bond are perfect examples of how successful an actor can be without one second of acting school classes/workshops. Both were absolute naturals. Why was Flynn one of the biggest stars of his time? He had not only the physical ability to handle any role he undertook, he had the subtle skill to make the role totally believeable. As Gentleman Jim Corbett, heavyweight champion from Sept., 1892 until his startling loss to the inferior Bob Fitzsimmons, March, 1897, Flynn certainly had the physicality to make himself appear as a "real" heavyweight champion, albeit of the sport's prehistoric era. As well, the Flynn personality---very much evident in all of his film vehicles---brings color to his roles. Here, as Corbett, Flynn perfectly captures the rogueish, dapper, likeable former champion. And he is able to match the Corbett boxing style. As for Bond, he absolutely matches Flynn's portrayal. As the blustery but good-natured John L. Sullivan, Bond likewise brings both the physicality and personality that made "The Boston Strong Boy" the Babe Ruth of his sports period. In the climax of the film, after Corbett has taken his title via a 21st round knockout, Sullivan appears at Corbett's victory party. Instead of berating his ring conqueror, Bond's Sullivan warmly and sincerely congratulates him...earning everyone's admiration, on the screen and bringing moistness to the eyes of viewers. It is a tragedy that both Flynn and Bond died prematurely. "Gentleman Jim" is a must for all sports fans, not just those who enjoy boxing. It is a thoroughly enjoyable story, with a solid cast throughout. A bit of trivia about Corbett: in 1926, he was brought in to the training camp, as an advisor, to Gene Tunney before the first fight with Jack Dempsey. Though Corbett was almost 60, he actually sparred with the 28-year old Tunney. Gene later reported that even an elderly Corbett gave him more trouble than most of his actual opponents. In fact, Corbett---because of his success during the Tunney sparring sessions---actually considered a comeback but ultimately rejected the notion.