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	<title>Comments on: Gyroball...fact or fiction?</title>
	<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction/</link>
	<description>Comments on MetaFilter post Gyroball...fact or fiction?</description>
	<pubDate>Sun, 02 Apr 2006 08:31:19 -0800</pubDate>
	<lastBuildDate>Sun, 02 Apr 2006 08:31:19 -0800</lastBuildDate>
	<language>en-us</language>
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	<item>
		<title>Gyroball...fact or fiction?</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction</link>	
		<description>In their book &lt;i&gt;The Secret of the Miracle Pitch&lt;/i&gt;, Japanese researchers using supercomputers modeled a potentially unhittable breaking pitch called the &lt;a href=&quot;http://sports.yahoo.com/mlb/news?slug=jp-gyro031306&amp;prov=yhoo&amp;type=lgns&quot;&gt;&quot;Gyroball&quot;&lt;/a&gt;. Baseball has been simmering with &lt;a href=&quot;http://www.robneyer.com/book_04_gyroball.html&quot;&gt;debate &lt;/a&gt; over &lt;a href=&quot;http://www.baseballmusings.com/archives/013449.php&quot;&gt;whether anyone&lt;/a&gt; can &lt;a href=&quot;http://baseballprospectus.com/article.php?articleid=2240&quot;&gt;actually throw it&lt;/a&gt;. Seekers of the elusive pitch claim that &lt;a href=&quot;http://en.wikipedia.org/wiki/Daisuke_Matsuzaka&quot;&gt;Japanese superstar&lt;/a&gt; and &lt;a href=&quot;http://ww2.worldbaseballclassic.com/2006/news/article.jsp?ymd=20060321&amp;content_id=1357787&amp;vkey=wbc_news&amp;fext=.jsp&amp;sid=wbc&quot;&gt;MVP of the 2006 World Baseball Classic&lt;/a&gt; Daisuke Matsuzaka throws one, and cite this &lt;a href=&quot;http://youtube.com/watch?v=PQCbvYwHPoA&amp;search=gyroball&quot;&gt;high-speed video&lt;/a&gt; &lt;small&gt;(YouTube)&lt;/small&gt; as an example. Another video exists, of high school ace &lt;a href=&quot;http://thejuice.baseballtoaster.com/archives/181026.html&quot;&gt;Joey Niezer purported throwing it&lt;/a&gt;. If it actually exists, the &lt;a href=&quot;http://everything2.com/index.pl?node_id=1792187&quot;&gt;Gyroball would be the first new pitch developed in almost 40 years.&lt;/a&gt;</description>
		<guid isPermaLink="false">post:www.metafilter.com,2006:site.50582</guid>
		<pubDate>Sun, 02 Apr 2006 08:06:26 -0800</pubDate>
		<dc:creator>edverb</dc:creator>		<category>baseball</category>		<category>gyroball</category>		<category>daisukematsuzaka</category>		<category>pitching</category>		<category>worldbaseballclassic</category>
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		<title>By: ajr</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265383</link>	
		<description>Great post.  Thanks.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265383</guid>
		<pubDate>Sun, 02 Apr 2006 08:31:19 -0800</pubDate>
		<dc:creator>ajr</dc:creator>
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		<title>By: reflection</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265384</link>	
		<description>why the mystique?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265384</guid>
		<pubDate>Sun, 02 Apr 2006 08:31:56 -0800</pubDate>
		<dc:creator>reflection</dc:creator>
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		<title>By: edverb</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265390</link>	
		<description>&lt;i&gt;why the mystique?&lt;/i&gt;

Just guessing...but I think it&apos;s a combination of factors. Claiming a new pitch is akin to claiming a new planet in the solar system. It&apos;s so rare that by definition it merits skepticism. 

Notice that even pitchers who believe the pitch exists are circumspect about it...Matsuzaka claimed he had never thrown one in a game on purpose. Maybe it&apos;s a way of hiding an advantage. 

Plus no major leaguer in America throws it (at least not to my knowledge). But I&apos;ll bet even the ones denying it are toying with it in practice, like secretive alchemists.

Also, there&apos;s some layman&apos;s distrust of bold baseball claims using physics....I&apos;ve read detailed physics essays that claim that a fastball (even one thrown 100 MPH) cannot overcome gravity to rise...which seems eminently reasonable and scientific until you&apos;ve faced a rising heater in the batter&apos;s box.

Perhaps American major leaguers baffled in the WBC by Matsuzaka&apos;s knee buckling breaking pitches (which start out looking like meatballs) will have served to convince them.

Anyway, I figure this will turn into a fascinating little subplot in baseball, maybe this season, in the wake of facing Matsuzaka in the WBC. If some MLB journeyman starts blowing batters away with a gyroball (as has saved many a career when pitchers add something new to their arsenal, see mid-career pitchers adding splitters as a prime example)...everyone will want one. 

To me, it&apos;s amazing to watch how the 150 year old pastime continues to evolve.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265390</guid>
		<pubDate>Sun, 02 Apr 2006 09:07:02 -0800</pubDate>
		<dc:creator>edverb</dc:creator>
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		<title>By: Ironmouth</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265391</link>	
		<description>Just what baseball needs--an unhittable pitch.  I&apos;d suspect that like every revolution, somebody will be able to hit it soon enough.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265391</guid>
		<pubDate>Sun, 02 Apr 2006 09:07:34 -0800</pubDate>
		<dc:creator>Ironmouth</dc:creator>
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		<title>By: pdb</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265392</link>	
		<description>Matsuzaka&apos;s looked, from that camera angle, like a conventional slider with an additional up-and-down movement; I didn&apos;t see anything special in it, but that&apos;s probably because of the camera angle (no perspective).

Niezer&apos;s, though, looked pretty impressive; &quot;unhittable&quot; may be a stretch, but because it&apos;s a &quot;new&quot; movement, it&apos;ll take hitters a while to catch up to it...</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265392</guid>
		<pubDate>Sun, 02 Apr 2006 09:08:45 -0800</pubDate>
		<dc:creator>pdb</dc:creator>
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		<title>By: eriko</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265399</link>	
		<description>&lt;i&gt;which seems eminently reasonable and scientific until you&apos;ve faced a rising heater in the batter&apos;s box.&lt;/i&gt;

It doesn&apos;t rise, but boy, it sure looks like it does.

Why? Two reasons:

1) The backspin on a rising fastball imparts lift. An experienced batter knows how a pitch drops over time, so the faster the pitch, the less the drop before it reaches the batter. But, if there&apos;s backspin, the ball doesn&apos;t drop as much. This leads to...

2) ...The batter guessing wrong.  He thinks the pitch is slower than it is, thus, it has more time to drop. When the ball doesn&apos;t drop enough (and arrives early), it seems that the ball rose and accelerated when it got close.

The second is the biggest factor. Inexperienced batters never see a rising fastball, because they don&apos;t know how pitches behave. It&apos;s only after you learn the basics that you can be fooled.

Having said that -- if anyone can make a curveball break three feet, it&apos;ll bring the curveball back into the game, and bring some much needed balance back to the pitchers. The problem is in recent years, with the lowering of the strikezone, the curve is much less useful, since it tends to be high. It doesn&apos;t do you any good if your curve freezes the batter, hit the strike zone dead center at the beltline, and gets called a ball.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265399</guid>
		<pubDate>Sun, 02 Apr 2006 09:20:01 -0800</pubDate>
		<dc:creator>eriko</dc:creator>
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		<title>By: notsnot</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265402</link>	
		<description>I would love to see baseball become a pitcher&apos;s game once again.  The DH is a travesty, and the best game I ever went to  had Greg Maddux one-hit my beloved Cardinals. Just pure mastery.   A pitcher&apos;s game has much more subtlety than the smash-fests the past few years have become.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265402</guid>
		<pubDate>Sun, 02 Apr 2006 09:25:41 -0800</pubDate>
		<dc:creator>notsnot</dc:creator>
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		<title>By: Falconetti</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265405</link>	
		<description>Excellent post.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265405</guid>
		<pubDate>Sun, 02 Apr 2006 09:30:25 -0800</pubDate>
		<dc:creator>Falconetti</dc:creator>
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		<title>By: Busithoth</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265409</link>	
		<description>this comes damn close to making baseball interesting.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265409</guid>
		<pubDate>Sun, 02 Apr 2006 09:44:37 -0800</pubDate>
		<dc:creator>Busithoth</dc:creator>
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		<title>By: ChasFile</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265411</link>	
		<description>Some basic baseball n00b questions:

1) Why, if the ball has the same spin as a bullet or a football - as the yahoo article says - does it break at all?  Isn&apos;t the point of imparting upon a projectile spin along an axis parallel to its motion to eliminate deflection?  Further along this counter-intuitivity fest, why does giving a ball rifle-like spin make it break &lt;em&gt;more&lt;/em&gt; than other pitches do?

2) Based on the way its being thrown, it looks like, when being thrown by a righty and from the pitcher&apos;s perspective, the gyro ball involves right-hand spin; that is, clockwise.  Why, then, again from the pitcher&apos;s perspective, does it break to the &lt;em&gt;left&lt;/em&gt;?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265411</guid>
		<pubDate>Sun, 02 Apr 2006 09:49:44 -0800</pubDate>
		<dc:creator>ChasFile</dc:creator>
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		<title>By: mikeweeney</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265414</link>	
		<description>&lt;b&gt;Busihoth&lt;/b&gt;, the operative word there is &lt;i&gt;close&lt;/i&gt;. :-)</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265414</guid>
		<pubDate>Sun, 02 Apr 2006 09:54:41 -0800</pubDate>
		<dc:creator>mikeweeney</dc:creator>
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		<title>By: phrontist</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265417</link>	
		<description>What is meant by &quot;break&quot;?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265417</guid>
		<pubDate>Sun, 02 Apr 2006 09:55:31 -0800</pubDate>
		<dc:creator>phrontist</dc:creator>
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		<title>By: mikeweeney</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265418</link>	
		<description>Busi&lt;b&gt;t&lt;/b&gt;hoth.  Sorry mate!</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265418</guid>
		<pubDate>Sun, 02 Apr 2006 09:55:35 -0800</pubDate>
		<dc:creator>mikeweeney</dc:creator>
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		<title>By: ChasFile</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265420</link>	
		<description>A pitch that &lt;a href=&quot;http://en.wikipedia.org/wiki/Breaking_pitch&quot;&gt;breaks&lt;/a&gt; is a pitch that moves, like a curve or slider.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265420</guid>
		<pubDate>Sun, 02 Apr 2006 09:58:25 -0800</pubDate>
		<dc:creator>ChasFile</dc:creator>
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		<title>By: deadmessenger</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265437</link>	
		<description>&lt;strong&gt;Eriko:&lt;/strong&gt; &lt;em&gt;if anyone can make a curveball break three feet,&lt;/em&gt;

There was &lt;a href=&quot;http://en.wikipedia.org/wiki/Dwight_Gooden&quot;&gt;a guy&lt;/a&gt; who could do that, but he&apos;s in a bit of &lt;a href=&quot;http://news.yahoo.com/s/ap/20060322/ap_on_sp_ba_ne/bbo_gooden_arrested&quot;&gt;hot water&lt;/a&gt; right now...</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265437</guid>
		<pubDate>Sun, 02 Apr 2006 10:32:36 -0800</pubDate>
		<dc:creator>deadmessenger</dc:creator>
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		<title>By: nthdegx</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265461</link>	
		<description>Top post.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265461</guid>
		<pubDate>Sun, 02 Apr 2006 11:07:46 -0800</pubDate>
		<dc:creator>nthdegx</dc:creator>
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		<title>By: i_cola</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265475</link>	
		<description>You guys should really get into cricket if ball movement is what gets you interested...&lt;a href=&quot;http://www.dangermouse.net/cricket/bowling.html&quot;&gt;[link]&lt;/a&gt;</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265475</guid>
		<pubDate>Sun, 02 Apr 2006 11:33:09 -0800</pubDate>
		<dc:creator>i_cola</dc:creator>
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		<title>By: Frank Grimes</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265489</link>	
		<description>With yesterday being April 1, my first thought was &lt;a href=&quot;http://en.wikipedia.org/wiki/Sidd_Finch&quot;&gt;Sidd Finch&lt;/a&gt;.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265489</guid>
		<pubDate>Sun, 02 Apr 2006 11:59:35 -0800</pubDate>
		<dc:creator>Frank Grimes</dc:creator>
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		<title>By: Nelson</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265509</link>	
		<description>Great post. So if pitchers start throwing gyros, how long before hitters find a new kind of steroids to make lots of home runs, thereby &quot;saving the game&quot; again?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265509</guid>
		<pubDate>Sun, 02 Apr 2006 12:30:12 -0800</pubDate>
		<dc:creator>Nelson</dc:creator>
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		<title>By: blacklite</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265529</link>	
		<description>I am really amused that this is a Japanese supercomputer-derived invention. Gyroball! ... but baseball is still pretty ridiculously boring.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265529</guid>
		<pubDate>Sun, 02 Apr 2006 13:16:43 -0800</pubDate>
		<dc:creator>blacklite</dc:creator>
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		<title>By: turbodog</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265530</link>	
		<description>&lt;i&gt;Why, if the ball has the same spin as a bullet or a football - as the yahoo article says - does it break at all? Isn&apos;t the point of imparting upon a projectile spin along an axis parallel to its motion to eliminate deflection?&lt;/i&gt;

For bullets and footballs yes, for baseballs no. You want the ball to move in a manner that makes it more difficult for the hitter to make good contact with the ball.

The reason the ball deflects is because a baseball isn&apos;t a perfect sphere. The seams impart irregularities that can dramatically effect the path of the thrown ball. Different pitches call not only for different ball rotations out of the hand, but diferent placements of the seams before the ball leaves the hand.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265530</guid>
		<pubDate>Sun, 02 Apr 2006 13:17:22 -0800</pubDate>
		<dc:creator>turbodog</dc:creator>
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		<title>By: ChasFile</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265546</link>	
		<description>&lt;em&gt;For bullets and footballs yes, for baseballs no. You want the ball to move in a manner that makes it more difficult for the hitter to make good contact with the ball.&lt;/em&gt;

Well that was entirely unhelpful.  I mean, I said n00b, not moron, right?

My first question is pretty much just pissing in the wind.  I get the fairly obvious notion that putting spin on a ball makes it curve - anyone who&apos;s seen my 5 iron slice can attest to that.  I also get that a 2-seam split-finger fastball will have a dramatically different trajectory (mostly down) than a slider (in the case of a right handed pitcher, mostly left) than a circle change-up (if done sneakily enough, then who knows?) because of different grips and release methods and whatnot.

My confusion arose from my perception that this delivery - a kind of modified slider where instead of coming around the ball you snap your wrist toward third, pushing downward on the seam with the fingers - looks like its designed to deliver some pretty wicked right-hand spin, yet the ball appears to break left.  Is the idea to do that door-knob turning motion and come all the way around the ball on release, kind of like a slider but without the curveball aspect of at the same time coming over the top?  I guess that would make some sense.  It just looks from the deliver like he&apos;s flicking the ball with his index finger more than he&apos;s coming around it with his middle finger.

But like I said, I don&apos;t know much about pitching.  Anyone know how to throw one of these things, and how its different, if at all, from a slider?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265546</guid>
		<pubDate>Sun, 02 Apr 2006 13:43:34 -0800</pubDate>
		<dc:creator>ChasFile</dc:creator>
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		<title>By: Kwantsar</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265559</link>	
		<description>&lt;em&gt;I get the fairly obvious notion that putting spin on a ball makes it curve&lt;/em&gt;

&lt;a href=&quot;http://www.npl.uiuc.edu/~a-nathan/pob/knuckle_slow.mpg&quot;&gt;Strangely, so does not putting spin on a ball.&lt;/a&gt;(.mpg)

How long &apos;till &lt;a href=&quot;http://www.npl.uiuc.edu/~a-nathan/pob/&quot;&gt;Alan Nathan&lt;/a&gt; weighs in?</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265559</guid>
		<pubDate>Sun, 02 Apr 2006 14:01:25 -0800</pubDate>
		<dc:creator>Kwantsar</dc:creator>
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		<title>By: A dead Quaker</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265622</link>	
		<description>ChasFile, this is more speculation but at least I&apos;ve got an interesting &lt;a href=&quot;http://library.thinkquest.org/11902/physics/curve2.html&quot;&gt;link&lt;/a&gt;.    If you note the cute animation at the bottom of the page, you see that a spinning ball will deflect perpendicularly from where it is travelling due to drag.

Suppose the (right-handed) pitcher applies a downward force to the ball, and it&apos;s spinning clockwise (from the pitcher&apos;s perspective).  Then it should travel leftwards, no?  (At least, this is how it seems when I apply a flip and 90 degree counterclockwise rotation to the animation.)

This would seem to justify the name &quot;gyroball&quot;.  But it&apos;s not clear how important the downward motion is in the release.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265622</guid>
		<pubDate>Sun, 02 Apr 2006 15:53:33 -0800</pubDate>
		<dc:creator>A dead Quaker</dc:creator>
	</item>	<item>
		<title>By: caddis</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265648</link>	
		<description>Best post in quite some time.

Thanks!</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265648</guid>
		<pubDate>Sun, 02 Apr 2006 16:48:00 -0800</pubDate>
		<dc:creator>caddis</dc:creator>
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		<title>By: davidnin</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265752</link>	
		<description>I really enjoyed this as well. Great post.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265752</guid>
		<pubDate>Sun, 02 Apr 2006 19:07:26 -0800</pubDate>
		<dc:creator>davidnin</dc:creator>
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		<title>By: Galvatron</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265760</link>	
		<description>I&apos;m also puzzled where the breaking force is supposed to come from.  If the axis of rotation is parallel to the ball&apos;s trajectory, then there should be very little Magnus force.  If you ignore the ball&apos;s drop due to gravity, and assume that the ball is uniformly rough, then the air pressure on the sides of the ball should be symmetric.  If you do take into account the drop due to gravity, then a right-handed pitch ought to generate some Magnus force pushing to the left, but it should be small relative to that of a curveball.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265760</guid>
		<pubDate>Sun, 02 Apr 2006 19:16:14 -0800</pubDate>
		<dc:creator>Galvatron</dc:creator>
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		<title>By: BobFrapples</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265879</link>	
		<description>Great stuff, edverb!</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265879</guid>
		<pubDate>Sun, 02 Apr 2006 21:55:39 -0800</pubDate>
		<dc:creator>BobFrapples</dc:creator>
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		<title>By: JKevinKing</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1265938</link>	
		<description>Great link!

If this pitch is real it will only be a matter of time before it makes its appearance in the Major Leagues.

Go Phillies!!!</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1265938</guid>
		<pubDate>Mon, 03 Apr 2006 01:27:55 -0800</pubDate>
		<dc:creator>JKevinKing</dc:creator>
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		<title>By: apodo</title>
		<link>http://www.metafilter.com/50582/Gyroballfact-or-fiction#1266536</link>	
		<description>ChasFile

Try throwing a beachball so that it has this type of spin. Put one hand on the ball, the other under it, and pull them apart as you throw. The flight has a corkscrew shape to it, spiraling away from the standard parabolic trajectory. Admittedly it goes less than 97 mph...but it serves as a demo.</description>
		<guid isPermaLink="false">comment:www.metafilter.com,2006:site.50582-1266536</guid>
		<pubDate>Mon, 03 Apr 2006 14:21:46 -0800</pubDate>
		<dc:creator>apodo</dc:creator>
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