Usyk does have a bit of a weakness to body shots, but you make a good point re: the cumulative damage. Main reason I never bought that it was a legitimate bodyshot was how quickly Usyk went down. Body shot KOs are usually delayed reaction while groin shots are almost instantaneous. And yeah, Dubois making zero song and dance about it was pretty damning. Why didn't he immediately start jumping for joy if he thought he got a legitimate KD?