Does anyone here know how to throw a gyroball? I want to know like what type of rotation it has.

Gyro ball is supposed to spin like a bullet.

Now my opinion about this gyro ball
ive seen alot of movies, read alot of articles.

What is a gyro supposed to do??
in japan they made pitchin machine who was able to “throw” the gyro
its kinda slider like, but breaks just a bit later
others say it looks like a slider, but doesnt break
red dot appears on the ball(rotating seams) so it LOOKS like aslider but just doesnt break, wich makes the batter “aim” for slider but misses

first of all, I think the gyro doesnt exist, its just a slider wich fails to break.

Ive tried to throw it. I got a ball wich dropped juswt before the plate, kinda like splitfinger. then it ended up being a horrible slurve( unhittable btw :stuck_out_tongue: it broke REALLY hard) anyways

dont even spend time on trying to throw it.
if u read about it. It appears that only 2-3 pitchers CAN throw it , if it actually exists:)

sorry for my bad english;) im dutch lol

A gyro is not supposed to break, a gyroball is a pitch thrown like a bullet that is supposed to relieve the stress on your arm, and it deals with stepping out towards 3rd if your a right or 1st if your e leftie, something like that.
The pitch everyone thinks is a gyro that Dice-K throws is more like a shuuto

Daisuke Matsuzaka- According to the result of analysis by high-speed photography, from the batter’s view, his forkball-like slider rotates in a counterclockwise direction (clockwise from pitcher), and it is explained that the gyro axle is inclined.[12] However, Tezuka and Himeno have different conclusions. Himeno says it is not just a slider but definitely a kind of gyro,[13] because the gyro has a strong possibility of making different big curves (like slider, shuuto, or forkball) as well as speed illusion when the gyro axle is inclined.[14]That’s why Matsuzaka is supposed to be a gyroballer, but Tezuka insists it is a little bit different. Tezuka thinks gyroball is an “unexpected ball” and basically it is not a breaking ball, it doesn’t move at all.[15] although it is quite close to a slider[16][17], 32Seemingly, Matsuzaka himself agrees with Tezuka’s opinion and he doesn’t think he is a real gyroballer.[18] He said, “Looks like they are talking about my cut fastball or sinking slider. I guess sometimes it has a similar rotation of a gyro, when I fail to throw the cut fastball or the slider properly, but it is not exactly a gyro itself. It is different. There is a particular way of throwing it. I guess it is a kind of shutto-like cut fastball. I can’t throw it like consciously, but occasionally I throw it accidentally. It seems to be rising, and the speed appears accelerated close to the batter. Nobody hit it before.”[19][20]Actually Seibu Lions’s catcher, Tooru Hosokawa said Matsuzaka occasionally throw strange cut fastball with gyro-spiral, it drops lengthwise,or turns aside, or rise up.[21]In addition, some players who played with him in Seibu Lions testified he sometimes throws it (Tezuka’s gyroball) when he plays catch, so even Tezuka affirms the possibility.[22]

Official gyroballers

* Tetsuro Kawajiri (retired)- He is supposed to be a typical gyroballer. According to the book, the authors confirmed he threw a two-seam gyroball.[5] It confuses the batter by giving the illusion that the ball is faster than it actually is, because of the greater difference between the start speed and end speed. The batter cannot adapt to the slower end speed, which is not what he expected. The gyroball is often confused with a changeup, but the beginning speed is the same as a fastball.[6]
* Shunsuke Watanabe (Chiba Lotte Marines)- He and Tezuka officially allowed him to be a gyroballer,[7] he throws a two-seam gyroball.[8]He thought it was just a non breaking curveball before Tezuka told him it was the Gyroball.[9]He throws 4-seam gyro as well.[10]
* Tomoki Hoshino[11] (Seibu Lions)
* Nobuyuki Hoshino (retired)- According to Tezuka, their fastball has a four-seam spiral movement. This is the four-seam gyroball. The nature is opposite to two-seam, the batter may confuse it as being much slower initially. Tezuka pointed it out in "スポーツトレーニングが変わる本" which means The book which changed a way of sports training. Especially Nobuyuki, he was supposed to be a typical slow baller, nevertheless, Norihiro Nakamura thinks his fastball was the fastest in Japan, much better than even Matsuzaka's. Since they both are left-handed, the moving direction is opposite to the other pitchers.


Gyroball is a kind of fastball or the physical phenomenon itself. The name given to a unique baseball pitch used primarily by players in Japan. The pitch was developed by a Japanese scientist, Ryutaro Himeno, and a baseball instructor, Jonathan Paruk, who used computer simulations to create a new style of delivery intended to reduce stress on the pitcher. They published their work in a book, currently available only in Japan, whose title is roughly translated as, The Secret of the Miracle Pitch.

Tezuka got the idea in 1995, when he found an American toy in a Japanese store. The toy is called the X-Zylo Ultra, and its reliance on the gyroscopic effect allows it to fly more than 500 feet when thrown.[1]

Amid many conflicting claims, Tezuka says the gyroball has been misunderstood.[2]
The Secret of the Miracle Pitch, the book written about the gyroball by Ryutaro Himeno and Kazushi Tezuka.
The Secret of the Miracle Pitch, the book written about the gyroball by Ryutaro Himeno and Kazushi Tezuka.

According to Himeno and Tezuka, a gyroball is thrown so that, at the point of release, instead of having the pitcher’s arm move inwards towards the body (the standard method used in the United States), the pitcher rotates his arm so that it moves away from his body, toward 3rd base for a right-handed pitcher and toward 1st base for a left-handed pitcher.

However, the technique to throwing the gyroball is all in the legs, not in the unique grip of the baseball. Kazushi Tezuka is an instructor at the Jyoutatsuya baseball dojo in Tokyo, and Osaka, Japan. “This,” says Tezuka, as he grabs his thigh, “is the most important part of throwing the gyroball. It has nothing to do with the hands.”[3]

The unusual method of delivery creates a bullet-like spin on the ball with the axis of spin in line with the direction of the throw, similar to the way an American football is thrown. According to Tezuka, the pitch, if thrown correctly, is meant to fly straight like a fastball. In baseball, most pitches are thrown with backspin, like the usual fastball, or with a more forward spinning motion, like the curveball and the slider.

Batters use the arm speed of the pitcher and the spin on a baseball, highlighted by the seams, to judge the speed and movement of the ball. The gyroball is thrown with the arm speed of a usual fastball but goes slightly slower or faster, and since it has a bullet-like spinning motion, on occasion (when the seams are hidden from view of the batter) it will make experienced batters swing wildly at the ball. The strategy behind the gyroball is that after throwing many variations of balls, the gyroball is thrown, and thinking that the spin on the ball means that it is much slower or faster, the batter would try to adapt the wrong speed. But since the gyroball exceeds their expectation, the batter’s hit is incorrect, and a strike can easily be achieved.

The gyroball is also often confused with a completely different Japanese pitch called the shuuto, due to an error in a well-known article by baseball writer Will Carroll[4]. Although Carroll later corrected himself, the confusion still persists.

The gyroball appears in the popular manga and anime series MAJOR.

In the video game MLB 07: The Show, only Daisuke Matsuzaka has the ability to throw the gyroball, although the movement of the pitch in the video game differs from the movement of the actual pitch

stolen from wiki

wouldnt rotating ur arm away from ur body cause more stress on the arm?

Not according to Mike Marshall.

It uses the same concept of mike marshall…rotating your arm protects your elbow from damage.
but anyways a PERFECT bullet spin either does nothing or drops like a splitter. alot of times what you really get is a slider type movement. In actuality you see alot of sliders with spins that resemble the gyro spin but are a little off.

Just found out that CJ Wilson, lefty reliever of the Texas Rangers, throws the gyroball. He was taught by Dr. Tezuka himself in spring training. Tezuka was there working with Akinori Otsuka. I’m guessing Otsuka doesn’t throw one?

After searching for some info on Yahoo, I found the following articles and weblogs. One blog is actually written by CJ himself.

–Another blog entry mentioning the Gyro]CJ Wilson’s blog on
. [url=[/url].

–Article on

–Here is the video mentioned in the previous blog]Texas Rangers fans blog
. CJ Wilson actually posts on there as well. He is user “blue glove lefty”. Here is another entry. [url=[/url] of Wilson striking out Eric Chavez.

i know how to throw it like abullet with no movement. I throw it in the game. I call it my 4 seam because its still as fast as my actual 4seam only with the slider spin. Its crazy cause I had so many BAD swings and upsets that they don’t like facing me.

I hold it like a 4 seam but i turn my palm towards 1st and when the ball is just about out my hand i pull down with my finger tips to give it the spin.

No movement is good. That’s the objective of the pitch. You want the hitter to see “slider” spin with fastball speed and trajectory.

i tried throwing one last night playing catch wid my uncle and i held it like a curveball and threw it like u would a spiral on a football and it was just as fast as my 4 seam and also it didnt break so i dont really see the point of it

In younger leagues it is probably pointless. In older leagues, probably high school at the minimum, an age where hitter regularly recognize breaking pitches is necessary.
The hitter will think it’s a slider or curveball. However, it isn’t so it will perceptually explode at them and if they thought it would move they won’t touch.

hardacc, re-read my post above. It’s NOT supposed to break. THAT is the point.

hey idiot shut up and go to youtube and search for gyroball and look at them they all break sum way or another so looks like u dont know anything

No need to call anyone names. If you believe all those video are gyroballs, then you are wrong. You obviously did not read any of my posts above. If you are going to act your age and be ignorant, that’s not my problem. The information I presented are in the links above. Check them out for yourself. Don’t tell me I’m wrong.

You obviously don’t know anything about the physics of a baseball if you believe a gyroball is supposed to break. I’m not trying to insult you. To now know something doesn’t mean you’re an idiot. It just means you don’t know something. Now I would call you an idiot if you were to ignore everything I have posted and think you are right w/o knowing the truth and facts.


did u go 2 youtube and seach for gyroball it even shows the pitching machine that is able to throw it and that breaks so plz look and my bad ur not an idiot

a proper gyroball should look like a slider but not break.

Ok for all of you 2 no there is a vid on youtube and it has the pitching machine that is able to throw throw gyroball throwing one so plz check it out so we can stop the drama

I’ll put an end to it, and by the way, you cannot trust youtube, Anyone can create a video. Now after you read this, can we put an end to this?

Finally, the gyroball mystery solved
By Jeff Passan, Yahoo! Sports
February 21, 2007

Jeff Passan
Yahoo! Sports

SCOTTSDALE, Ariz. – [b]The man who discovered the gyroball wanted to clear up something. The pitch, contrary to its legend that might as well have been cooked up with water from Loch Ness, does not dart 4 feet or dip 2 feet or do the Macarena before it reaches home plate.

The gyroball, Kazushi Tezuka said, really shouldn’t move at all.[/b]

Hearing this was like hearing Santa Claus doesn’t exist. I had started my search for the gyroball nearly a year ago, when Daisuke Matsuzaka was introducing himself to the United States for the first time during the World Baseball Classic. Message boards postulated that he threw this mysterious pitch by using double-spin mechanics, which sounded more like car technology. The pitch was supposed to revolutionize baseball, and when I asked Matsuzaka whether he threw it, he said that he had accidentally and that he wanted to learn it. By the time the Boston Red Sox emptied a Brinks truck to sign Matsuzaka, the gyroball was a full-blown phenomenon.

Turns out everything we thought was wrong.

Well, almost everything.

Now I can say, without question, the gyroball is no myth.

What exactly the gyroball is, however, I’m still not sure.

Spending two hours with Tezuka at Scottsdale Stadium, watching a DVD of gyroball highlights he had compiled, showing that DVD to Barry Bonds to get his take, learning how the baseball community started to associate Matsuzaka with the pitch, being told Pedro Martinez might have thrown it, seeing the gyroball’s godfather throw it and then trying to whirl it myself – all of the elements, it would seem, to a crash course of Gyro 101 – couldn’t definitively answer that question.

Early in the afternoon, Tezuka arrived with Masa Niwa, a journalist and his interpreter for the day, ready to explain the pitch. He had flown here from Tokushima Prefecture not just to meet with Texas Rangers reliever Akinori Otsuka – with whom he works as a performance coach, though Otsuka does not throw the gyroball – but, hopefully, to correct the fables of the gyroball.

Like that the pitch was discovered in a laboratory. Tezuka, 44, actually recognized the possibility of the pitch in 1995, when he found an American toy in a Japanese store. It is called the X-Zylo Ultra, and its use of a gyroscope – a device that uses inertia to balance itself – allows it to fly more than 500 feet when thrown. Tezuka tried to apply the principles of the X-Zylo to throwing a baseball and brought the idea to Dr. Ryutaro Himeno, a respected scientist at the Japanese lab RIKEN, who put together computerized models based on Tezuka’s theory that gyro spin would subject a baseball to less resistance.

The result was the first image on the DVD. The ball, spinning in slow motion, was orange, green and blue, and it looked like an image Wavy Gravy would’ve stared at for days.

From there it cut to live video of high school students throwing the pitch, then of a professional submariner named Shunsuke Watanabe. He threw a two-seam gyroball, Tezuka explained, aligning his index and middle fingers along the ball’s seams. There is also a four-seam gyroball, with the fingers across the seams, both pitches gripped like the two traditional fastballs. The best way to throw the gyroball is sidearm, Tezuka said, because the mechanics – pulling down on the ball’s side, like throwing a football, to create a sideways spin – are more natural.

“That’s a changeup,” I said.

It sure looked like one, jamming the hitter as he mustered a feeble swing. I paused the video and rewound, just to make sure, and stopped again to assert that the two-seam gyroball was nothing more than a changeup.

Tezuka didn’t respond.

He hit play on the video again and moved to the next batter.

“It looked like a cut fastball a little bit,” I said. “It’s like Mariano Rivera.”

“No,” Tezuka said. “That means it moves.”

He hit play once more. Next batter.

“That’s a slider,” I said, “like Jeff Nelson’s.”

[b]Tezuka conceded that if the gyroball is anything, it’s closest to a slider – and that, he said, is what makes it so special.

If thrown correctly, Tezuka said, the two-seam gyroball should look to a batter like a slider and act like a fastball. That is why, as described in the title of the book he and Himeno wrote, it is a “miracle pitch.”[/b]

Bonds was not convinced. In a highlight later on the DVD of Major League Baseball’s 2000 tour to Japan, Bonds batted against Tetsuro Kawajiri. He looked at the video of him lunging for a pitch that seemed to have broken backdoor over the outside corner.

“That’s a sidearm slider,” Bonds said.

I asked whether it was a gyroball.

“I don’t know what that is,” he said.

It was supposed to be the first new pitch since Bruce Sutter popularized the split-fingered fastball … which itself was nothing more than a new grip, providing a different break, on the already-used forkball. The novelty of the gyroball caught on in the U.S. as it had in Japan. Kids posted videos of themselves on YouTube trying to throw the gyroball. The double-spin mechanics Tezuka teaches – rotating the hips and shoulder in sync to prevent injuries – became the key to unleashing the nastiest breaking ball out there.

“Everyone,” Tezuka said meekly, “kind of misunderstood.”

The theory behind the gyroball is this: When a baseball spins sideways, like a bullet, it should cut down on the amount of resistance on its path to the plate. Without the same amount of air resistance as a regular fastball, which rotates backward, the four-seam gyroball should not experience the same slowdown and look as if it’s exploding toward the plate.
A perfect gyroball should be straighter than the crease on a pair of slacks.

“It doesn’t move,” Tezuka said. “It doesn’t move at all.”[/b]

Turns out all the videos claiming to capture Matsuzaka’s gyroball were instead of his slider, a pitch that has confused gyrophiles since 1999
. A television station in Japan tried to understand the dominance of Matsuzaka’s slider and noticed he pronated his wrist – or let it turn outward, like a screwball, except releasing the ball off the inside of his fingers rather than the outside – as Tezuka teaches practitioners of the gyroball.

The station urged Tezuka to confirm that Matsuzaka regularly threw the gyroball. He wouldn’t. The connection was there, though, and has stuck for almost a decade.

When Matsuzaka admitted last year that he had tried throwing it, he wasn’t lying. Tomoki Hoshino, himself a gyroballer and a former Seibu Lions teammate of Matsuzaka, told Tezuka that Matsuzaka would try to throw the pitch while messing around.

Asked about it at his spring-training press conference, Matsuzaka played coy: "Should I say, ‘I have that ball’? Or I could say, ‘Which particular ball are you referring to?’ Or, ‘Which ball are you calling a gyroball?’ "

And then he said, “If I have the chance, I will pitch that ball,” which added even more mystery.

“It’s part of the fun of baseball,” said Robert Adair, who wrote “The Physics of Baseball.” “These hooey things and stuff like that. It may be of some psychological use.”

Adair, who in the late 1980s was appointed by Bart Giamatti as “physicist to the National League,” said that the amount of air resistance a ball faces “doesn’t make any difference” to the speed at which it travels. Like so many others, he sees the gyroball as nothing more than a great story.

“No,” Tezuka said. “I just want people to understand what the gyro is.”

Tezuka stepped on the mound at Scottsdale Stadium. He had taken off his pullover to reveal a slight 5-foot-7 frame. He wore black shorts, a tan hat, sunglasses and a look of excitement, because he was holding two baseballs, one colored half-red, the other half-black, and he was about to show off his discovery.

I stood behind the empty batting cage to get a better look. Tezuka adjusted his fingers to the correct spots on the four-seam black ball, which he sells for about $25 a set back in Japan. If he threw a gyroball, the only thing I would see was black, because that was the half of the ball that was supposed to spin toward the plate.

Black it was, with small flickers of white, because the axis wasn’t perfect. Same went for the red two-seam gyroball. Almost all color.

“That’s the gyroball,” he said, and it was somewhat anticlimactic, the game’s purported great revolution looking in actuality like nothing more than a fastball.

Still, it was an explanation, something substantive, and something, too, that I could try. Tezuka has been teaching baseball for 15 years and has 1,300 students, from children to players in Nippon Professional Baseball. He gave me a short explanation, jogged behind the cage and told me to fire. On my fourth pitch, he jumped.

“Yes!” he said after I tossed the four-seamer. “You threw the perfect gyroball.”

Hmm. That was easy. Instead of throwing over the top, I torqued my wrist slightly so the ball would spin sideways. It felt like a fastball, looked like a fastball and moved like a fastball.

Apparently, it was a gyroball.

Tezuka walked over to congratulate me. He jokingly patted my left leg up and down as if to check me for foreign objects. While the admiration was nice, I told Tezuka I was convinced I’d thrown a fastball.

Pedro Martinez thought he was throwing fastballs during his prime as well, Tezuka explained. He said slow-motion analysis shows Martinez with the correct motion, arm action, grip and spin for a four-seam gyroball.

“He probably didn’t even know,” Tezuka said.

And that would seem the essence of the gyroball: We don’t know. We don’t know if it’s simply a theory that plays out in a computer and not in real life. We don’t know if it’s a new kind of grip, like the first time someone grabbed a baseball holding the OK sign and created the circle changeup. We don’t know if it’s an arm motion that has been used by another player and never given a label. We don’t know if it’s a fastball or a cutter or a changeup or a slider.

There is one thing I do know: It’s something, all right. [/i]

dude u dont know wat ur talkin bout