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@TheMagnusPI
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Amateur critic, beer maven, seam tamer, . MLB Team Consultant. Same handle everywhere.
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Pinned Tweet
De gustibus non est disputandum.
But when it comes to Seam Shifted Wakes,
Gyro is objectively sexy.
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Why were home runs so much longer before we started measuring them?
Home plate marker for Griffith Stadium, home of the Washington Senators from 1911 to 1960, (Senators II, 1961) lies in a hallway inside Howard University Hospital. Mickey Mantle hit (arguably) the longest home run in baseball history from this spot on April 17, 1953.
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The hands-down coolest beer can I have ever seen
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Today I get to play catch with my son for the first time since June when he fractured his elbow. I haven't seen my Christmas presents yet, but this will probably top them all.
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Gausman trying to deek the runner at second into thinking a changeup is coming.
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I am really excited to present our collaboration with
@PitchingNinja
on baseball aerodynamics. This video explains how baseball seams can move the ball. This will be entered in the APS DFD Gallery of Fluid Motion. Have a look.
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There's one day each year where you get 4 MLB playoff games, right? Why doesn't that day have a name, and why is it not a holiday?
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Post 35: Effect of seam height on baseball drag.
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Counterpoint: no he did not
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Respect to this Astros fan for his commitment
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A really good example of how much MLB baseball seams vary.
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Who has two thumbs and made the high school team?
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I'm going to tell my kids this is Nolan Arenado
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@benjamntenison1
What makes you think the ball used to be less squishy?
Slower pitches would result in shorter drive distances, I believe.
The bats? Well, okay.
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Take a vote of the 4 people closest to home and it's 3-1 this is a ball.
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Wow. Didnโt expect to get a shoutout on Sunday Night Baseball. And itโs true, if the ball were stitched together differently this would all be a lot less interesting.
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Our paper on baseball seam effects is now accepted for publication in Experiments in Fluids. This was a very long road and I'm very proud of this work.
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Of all the people to be surprised to find themselves featured by
@PitchingNinja
, Jauss has to be the most surprised.
Dave Jauss, 4 Pitch Overlay (consecutive pitches). ๐ฏ
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So far, in all cases, any seam that is past the hemisphere line and less than 35 degrees past it causes the seam to be the wake starting point. Example shown below. I think we are onto something important.
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How to grip a Looper. Part of a complete presentation on Seam Shifted Wake pitches that I have presented to 4 MLB teams. It's time for the other 26 to have a look.
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For the first time, we've found a laminar separation bubble on a baseball. This ball is rotating and moving about 70 mph. The bubble is between the seams at the top. This happens on some airplane wings and I've had an eye out for it since day 1. So, there it is. Thanks, Jack.
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The only thing worse than watching a promising rookie starter load the bases and then give up a grand slam is hearing A-rod yammer about it
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I'm probably not the first dad whose boy lost his 100g plyo the day before a tournament and filled a whiffleball with rock salt and wrapped it in duct tape, but if I am, I want some kind of
@KingofJUCO
award
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Something to ponder: This clip sat unnoticed for 42 years before Rob recognized how awesome it was.
Ron Guidry, Slider.
Ninja Fact:
The Penalty for K'ing in 1978 was a slap to the junk.
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Bumping this again, if you want to know how to set your Hack Attack dials to get a desired Velo and RPM, you can use this sheet:
If you want to know how I came up with that,
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Steven Strasburg's changeup accelerated downward faster than a free falling object about 10% of the time during the season for reasons explained here:
Last night, it was closer to half his changeups, and the other half were close.
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One of the most fun things about twitter is how a very narrow axe to grind can turn into a great account.
@justsaysinmice
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I was keeping this close to the vest, but
@BauerOutage
and
@PitchingNinja
have reminded me that being as open as possible is the way be. So, feast your eyes. This is how you do it. Top ball is normal change. Bottom one is seam shifted. Broke down 10", is descending at a ...
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New level of tourney asshollery.
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Turn off the awful sign stealing news, relax about Mike Trout and check this out: Turns out scuffs don't make the flow turbulent. They make the flow separate early. Who knew?
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I now have, hands down, the coolest car in Logan, UT
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1/2) Iโve written a post that explains the Laminar Express pitch to a layperson, soup to nuts.
While writing it, I became a bit giddy, thinking how unbelievable this pitch is and how lucky I am to be in a position to explain it.
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Happy boy here.
@locatejared
may be the best guy out there. Heartfelt thank you for making Sam's whole year.
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I think Maldonado had some kind of accident here.
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Here's a bit I did for a
@PitchingNinja
video about Kratz knuckleball. This will be the first pitch I try next week for Knucklepalooza. I'm betting we can repeat it.
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I haven't been feeling well. Somehow my target ads know.
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SSW makes sinkers move one way, 4-seamers the other way, and most pitchers are doing it. Some do it much better than others. Today, SSW moves from the shadows into the light so we can begin to try to understand how to use it best. I'm really proud of this.
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Going full Ninja for today's zoom class.
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Here is how you find spin axis, RPM, and Orientation of a pitched baseball from video. It's a solved problem.
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Maybe the best example I have seen of a seam-shifted wake on a changeup (Sorry, Stras). This pitch has so much gyro it doesn't look like a discoball, but it has similar tilt. Seam near the top causes massive separation and a tilted wake. Maybe we need more gyro!
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Several friends recommended NCAA baseball to me last year and I signed up for ESPN+ and watched a couple of innings. It didn't really take.
I've watched 2 this year and have enjoyed both a lot. Maybe ESPN+ is putting better games on the feed or maybe the broadcasts are better.
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Great night to reprise this
Max Fried (Carl Spackler/Caddyshack, inner monologue).
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Today, I'll explain Laminar Express using a real baseball on a stick. No data! Just waving hands. New Post!
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I have a new post about how baseball seams may affect flow over the ball. Comments/questions are most welcome!
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Proved once again I have no business catching for my son. Could have been worse.
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Want to tip my cap to
@PitchingNinja
. Look at all the tweets from others about NCAA pitchers this week. NCAA owes you a cheque, man.
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I have a sophomore son with excellent grades in challenging courses and is involved in other activities. He is interested in playing baseball in college at D3 liberal arts school, which is not what most people talk about here. Can anyone suggest how to start looking?
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Fantastic article out today from
@BenLindbergh
on realistic pitching machines (ones that can throw gyro). It's a great read. To me, the most amazing quotes are the ones from front office members expressing skepticism of the value. They will be left behind.
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Good call by
@mike_petriello
on May's curve. I had looked at this earlier based on a smaller sample and was not convinced, but he has clearly started using Seam Shifted Wake on his curve (see plot in comment) to make this pitch sweep, at least in some cases.
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Itโs a long story but Delta fixed a snafu in my Tavel tonight by giving me my own plane.
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After a year at this, I still find I am confused half the time when discussing pitching with others. So, I wrote down everything I think I understand about it. Please let me know where I am wrong.
@PitchingNinja
@AugustineMLB
@EOF34
@pobguy
@BauerOutage
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I'm amazed at how many of
@PitchingNinja
's favorite pitchers were in the post season. It seems like pitching is pretty important.
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New product idea for Rotowear. Youโre welcome.
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To those who think the "juiced ball" (I hate that term, btw) was a Manfred conspiracy, I don't understand why he would launch such a conspiracy and then hire people to prove it a few months later. Can anyone explain that?
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We have an asphalt driveway and it has to be sealed occasionally. We had a guy who used to do it. He required payment up front so he could purchase material. Last time, many years ago, he never showed. My wife called and was informed he died. He just sealed my neighbor's drive.
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The boy told me he enjoys throwing with me today. Day made.
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A lot of us spent a lot of time on a famous Garcia splitter. Here's a new splitter to scratch our heads about. 85.7 mph, less than 1000 rpm by my count, a 3:00 axis with a lot of gyro. I doubt a Magnus model can describe this motion. Anyone know how to confirm/deny that? 1/
Casey Mize, Odious 86mph Splitter. ๐คฎ
Quickly becoming one of my favorite pitches...
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At long last, after well over 3000 cannon shots, many revisions and publisher delays, here is our paper on how baseball seams alter boundary layer separation points.
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Put this in the top 10
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This one may go unnoticed because Clay Holmes isn't a household name and this was ruled a HBP, but this sinker is on par with Treinen and May IMO. Look at this movement! The key to SSW will be to learn to repeat this.
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@UmpireAuditor
I mean, this must have been his best game in years. Respect for him bearing down in a big spot.
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I give you the 112 mph Knuckleball.
I reckon it's pretty boring.
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This is the first time Iโve been able to see that mountain in six weeks
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@MentorPhil
@TheTweetOfGod
My favorite thing about god is that he retweets those who condemn him
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Happy I got to enjoy this one more time.
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@PitchingNinja
That may be the most amazing thing I've ever seen. I mean, that's a 50/50, right?
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Anyone doubting the vaccine's effectiveness should check out vaccination rates in these states
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You gotta figure the bots are keeping track of those that make fun of them when they blow it. Stay away from Rob on Judgement Day.
Needed a pic for a thumbnail, so asked AI to draw a left handed hitter at bat from the pitcherโs perspective.
The result. ๐๐
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@aydan
@PitchingNinja
Say you don't know what "skill" means without saying you don't know what skill means.
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Andrew has done it again. Here's a Seam Shifted Wake pitch that does not require gyro. Add break to your changeup or make your fastball ride. Or do the opposite. It's up to you.
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I was just offered the opportunity to help a boy whose parents are immigrants (and intimidated trying to understand local opportunities) get into baseball. I feel absolutely privileged to get to do this.
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My Dad, Joseph Smith, past away at the age of 88 a couple of days ago. He was in hospice for some time, so this was no shock. I'm not looking for sympathy notes from people I don't know, but I do want to tell everyone he was here.
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I'm flying home from a bit of a tour of the Grapefruit league. I learned all kinds of things, but perhaps the biggest impression is the influence that
@DrivelineBB
has had on the game. Equipment, practices and people, everywhere. I think they won. (no, I don't work for them).
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@UmpScorecards
I am willing to bet that the average age of the plate umpires was also a record low.
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This is the best uniform in baseball, especially the turtleneck.
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Out of the box idea: a fastball with increased drag. Initial speed same as normal fastball but decelerates more. Could that be an effective pitch? I think it could be done.
@doublexcanflex
@BauerOutage
@one_pitch_man
@PitchingNinja
@pobguy
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