Slow the YouTube counter all the bvb way down to 0.25 speed. Those were both clean knockdowns. Chuvalo had cleanly regained his balance both times he went down. Mike Weaver very cleanly dropped LeDoux with a powerful jab. I'm not sure Hercules ever flicked it out in that one.
Didnt Patterson drop Ellis and it was called a slip? Patterson also slipped against Bonavena but it was ruled and knockdown and then later dropped Bonavena only for it to be ruled a slip.