In the video "Jack Dempsey and Rocky Marciano on the Phantom Punch" Both Dempsey and Marciano said they saw the punch. Both said that there was no possible way to judge how hard the punch impacted Liston -- unless they were on the receiving end of the punch... Both boxers made both points... Both were ignored by the popular media in favor of the "THE FIX" which was a much bigger story than a very short and messed up fight... The officials and commissioners seemed to be "OUT TO LUNCH" on what happened ... Liston was stepping into the punch which made the shot many times harder.
Try this..
If you strike the palm of your hand with your fist you can produce a tremendous impact with 5 or 6 inches of space to start the punch.. Almost every top Heavyweight fighter has nailed an opponent coming in with a very short punch that dropped him for a count.. It might happen sometime in sparring or it will happen in an actual fight..
Marquez's right hardly traveled a few inches when it landed on Pacquiao's chin.. JMM was in a very awkward position so far as leverage is concerned..
https://www.youtube.com/watch?v=0O5tfWc7YGc.. See for yourself how short the punch was.. The potency was Pacman moving into the punch. The impact of the very short punch produced Ice City ... It was perfect timing you rarely get -- and Pacquiao didn't budge for the count of 1000.
Experts like Marciano and Dempsey were totally ignored... Media buffoons like Cosell and Heinz made the call on the veracity of "The Phantom Punch"