Ha, I had wondered the same thing...I know it's no big deal, but I remain fixated on the notion that Williamson's 285 is a listing, not a measurement, and as a former banker, I know one must always remain alert for transpositions! He's undeniably huge and athletic...I'm just not buying 285 at all.
Google tells me that the world record in the high jump is 8’ 1/4”, set in 1993. If you were to assume that David Thompson could jump the same height while keeping his body vertical (which would of course be impossible) then the midpoint of his body would be eight feet high. Then add half of his 6’5” body and the top of his head would be 11’2.5” off the ground (ignoring the extra 1/8” because I’m on my phone and drunk). Then you’d need to add the distance from the top of his head to the top of his outstretched arm. Google tells me that Mo Bamba’s standing reach is about 2’7” greater than his height without shoes. I doubt Thompson’s arms were as long as Bamba’s, but continuing this exercise that would mean his hand is 13’9.5” from the ground. So that would be enough to reach the top of the backboard.
So in summary, for Thompson to grab a quarter on the top of the backboard he would have to jump as high as the world record high jumper, while keeping his body upright, and have arms equaling the longest player ever recorded at the combine. Then he’d have to hang there long enough to leave change.
Here is an article on the subject from ESPN about a decade ago:
http://www.espn.com/blog/truehoop/po...a-jumping-myth
Summary: yeah, it is highly unlikely that anybody has touched the top of the backboard legitimately, let alone taken a quarter off the top, let alone left change.
They asked around amongst the best current leapers. LeBron said he couldn't. Dwight SAID he could, but wouldn't prove it. James White (considered by many to be the best dunker ever, including a between the legs dunk from the free throw line) said he could, and actually tried, but came up a few inches short on his best efforts on two different occasions.
Again, White (who is 6'7" and arguably the greatest dunker ever - seriously, his dunk highlights are silly) couldn't quite do it. Not saying it is impossible. But it's pretty close to impossible. And I'm pretty confident that David Thompson - who was unquestionably a great leaper - didn't do it either.
That's the thing: it's one of the most talked about myths out there, and is a myth that has been around for decades. If a guy could really do it, there would be legitimate video of him doing it by now.
Zion: "Hold my Powerade"
Perhaps there is variability not yet discussed. In addition to different styles of jumps, there are different body types forged in various sports (eg basketball, volleyball, high jump).
Basketball combine vs Football combine standing vertical records (NFL _only_ measures standing vertical; note that basketball players typically add 4-6 inches when allowed steps):
NBA
40" - DJ Stephens
39.5" - Nick Young, Kenny Gregory
38.5" - Dorian Finney-Smith, Alex Scales
38" - Justin Anderson, Harrison Barnes, Dwayne Mitchell
37.5" - Joel Bolomboy, Demetrius Jackson
NFL
47" - Willie Creear (at a regional combine)
46" - Gerald Sensabaugh
45.5" - Cameron Wake
45" - Chris Conley, Donald Washington, Chris McKenzie, Chris Chambers
44.5" - Byron Jones
44" - AJ Jefferson, Obi Melifonwu
43.5" - 8 players
Also, consider that power lifting is used in training for vertical jumps. Here's Olympic lifter Shane Hamman (on the right): IMG_7034.jpg
He's 5'9" and 360lbs. He can dunk from a standing position...can you? lol.
Lifter and WWF wrestler Mark "Sexual Chocolate" Henry can dunk, too. He's 6' 3"...but he was also 370lbs!
Is the NBA vs NFL disparity due to powerful/explosive physiology like muscle fibers, mass, or synchronization? Or, is it due to a difference in technique (2 vs 1 footed jumpers) or technical skill (practiced expertise for the combine)? Does the difference scale up for non-standing vertical jumps, too?
Robertas Javtokas (here), Michael Wilson (here), and Wilt Chamberlain are all reported to have dunked on a 12 foot rim. James White (reported in CDU's link above), Jeremy Evans (pic here) and Guillermo Diaz (reported here) all get a vertical reach around 12' 9". Dwight Howard looks to comfortably reach 12' 6", and I think even Shaq had a vertical reach of 12' 5". So, basketball players are approaching 13'. Could someone with a more explosive build, better technique, or practiced expertise do better? Could David Thompson have been that dude?
IDK. I'm just blabbering because I really, really, really want Zion to be the first myth buster on verified video record. Legend.
Should we ASSume standard US CMUs?
https://en.wikipedia.org/wiki/Concrete_masonry_unit
[redacted] them and the horses they rode in on.
It occurs to me that probably the most accurate way to assess how high somebody actually jumped (not how high he/she REACHED, but how high he/she JUMPED) is by timing how long it is from when the feet leave the ground to when the land. Gravity don't lie. The only way to stay in the air longer is to jump higher.
If you had an accurate measurement, say down to the thousandth of a second, for example, you could definitely prove that one player could/could not jump higher than another.
Just a thought.
"We are not provided with wisdom, we must discover it for ourselves, after a journey through the wilderness which no one else can take for us, an effort which no one can spare us, for our wisdom is the point of view from which we come at last to regard the world." --M. Proust
Quick Google on the vertc - https://www.power-systems.com/shop/product/vertec - which states that it can measure up to 12'
Zion clearly went higher, so his vert reach was more like 12'2" or 12'3" which is pretty impressive (unreal) for someone of his height+weight
I also like his "ah, shucks" type attitude.
Sage Grouse
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'When I got on the bus for my first road game at Duke, I saw that every player was carrying textbooks or laptops. I coached in the SEC for 25 years, and I had never seen that before, not even once.' - David Cutcliffe to Duke alumni in Washington, DC, June 2013