I've been watching a lot of boxing anime lately, and decided to start watching old footage. I have a relative named after Jack Dempsey, and I gotta say that the Dempsey roll is a hilariously aggressive technique. Literally forcing yourself to repeatedly almost stumble by punching hard af is pure dudes rock energy.
One of the Hagler hearns fight explodes into all out warfare from the first bell. Non stop action throughout the fight. I don't think they clinched until like round 3.