http://how-to-box.com/content/boxing-term-day-pivot-blow According to this Articles excerpts : The pivot blow is an illegal strike in boxing. Last time it was used "legally" was in the 32nd round of an 1889 fight between the original Jack Dempsey and George LaBlanche. LaBlanche actually used the pivot blow twice in this fight, first time in the 26th round landing a whipping right onto the neck of Dempsey. Then in the 32nd round, Dempsey let his guard down after believing LaBlanche was out of steam, when LaBlanche again did the big pivot and landing a crushing right on the bridge of Dempsey's nose sending him to the floor and winning LaBlanche the title. Shortly after that, the New York Boxing Commission made the blow illegal. Their reasoning apparently was out of respect for Dempsey and to prevent another poem from being written -- as one appeared in this case. From what I can find, following is an excerpt of that poem on his unmarked grave, but doesn't seem overly "disrespectful" to me. The pivot blow is a right thrown after a complete turn/pivot on heel of one foot. The boxer turns completely around often delivering it like a backhand, or even an elbow. Basically, tremendous force is generated from the acceleration of the spinning motion and their is very little control - they just let it swing.
Well as far as jumping punches I guess they're legal?? RJJ sure was kangaroo punching Lacy and the ref didn't say squat.
The definition you posted is not what Floyd did. The definition states a complete turn in a circle. Floyd did not do that.
Shane mosley sometimes does a leaping left hook, where he actually jumps towards the person with full force on the hook. RJJ was the pro at it, Manny Pac is always jumping and punching, in and out.
It's a gray area as it seems the pivot is what makes it illegal ... I am going to NYSAC to read regulations to see if I can find the exact wording.
He pretty much kayoed a guy with the first punch of the fight in his first title defense with a leaping hook. It was brilliant.
That would be good but again you can PIVOT in boxing, it's that the punch just happens to be called pivot punch. It's a complete turn, it's essentially a spinning backfist or spinning punch depending on how you turn.