※ [本文转录自 SFGiants 看板] 作者: abc12812 (abc12812) 看板: SFGiants 标题: [翻译]Crossing the Bridge(4-4) 时间: Wed May 14 12:55:08 2008 The first thing that I noticed was the height of the glove side arm during the throwing process. If you look at Zito's delivery in 2000, he separates the glove and ball hands in a more horizontal manner—more in the transverse, or east-west plane). In 2008 he has much more of a teeter-totter release. The glove hand is raised much higher during the throwing process. You also can see that his front shoulder is elevated much more in 2008 as compared to 2000. Also, look at the height of the front foot at the same point of delivery. Not only are his shoulders elevated, but his front hip is also elevated. Again, this promotes “teeter-totter” and is cannibalizing rotation around the spine. If we look at the body just after release of the ball you can see that he's bent over more. Look at the position of his head—it is bending down almost below the shoulder line. One potential consequence of losing east-west rotation is a decrease in forearm layback (action rotation of the shoulder). That rotation is critical in terms of developing a whipping action. There are several critical aspects in creating this loop. The greater the amount of forearm flexion, the greater the potential throwing velocity. In the picture below you can see that the amount of forearm flexion in 2008 appears to be somewhat less than in 2000. What's also critical about the whipping process is getting the forearm to lay back in the rotational plane of the shoulders. The greater the north-south (teeter-totter) delivery, the greater the potential for the forearm to not lay back in the rotational plane of the shoulders. And then we have that “funky” action of the posting legs after release in 2008, as compared to what I call a well-behaved posting leg in 2000. More often than not, I learn as much about a player's throwing effectiveness from watching what happens to the pitcher's body after release as what happens before the release. In particular, look at how Zito's rear leg passes through what I consider a very awkward-looking configuration as compared what his posting leg is doing in 2000. This indicates pushing the ball forward. The action of that posting leg also suggests loss of rotation of the pelvis and upper torso around the front hip joint. The back leg action in 2008 as compared to 2000 possibly indicates that Zito is not rotating around the front hip joint as efficiently as he did in 2000. It is possible that Zito, like most pitchers, coaches and instructors, believes that the further he releases the ball out in front , the greater his advantage. Nothing could be further from the truth. Attempting to release the ball out iront or extend to the batter is the quickest way to degrade velocity and movement. It becomes a vicious cycle, because as he tries to release further out in front and get more on the ball, he becomes more linear, which promotes more muscling of the ball and loss of mechanical advantage. The more he tries to muscle the ball, the less control he has. One of the most telling effects of this is missing high with the fastball These differences in Zito's 2008 mechanics as compared to his 2000 mechanics are enough to create a 4-5 mph velocity decrease along with control problems. In closing I've taken the liberty to construct a 92 mph Barry Zito. Should a representative of the Giants (or Zito) wish to contact me I would be very happy to share my thoughts on what it takes to design and implement a 92 mph Zito…… 我第一个注意到的是他的手套抬得特别高。在2000年时Zito的手套是比较向水平方向伸展 。2008年他的姿势已经变成有些像是跷跷板的样子了。 你可以看到他前面肩膀的部份也抬得更高了。 还有，不只是上半身，他的臀部也抬高了。同样的，这会让他的姿势变的像跷跷板并且降 低身体的旋转幅度。 出手後的一刹那：身体弯曲的更多了，看看他头的位置，都快比肩线还低了。 丧失水平方向的旋转的其中一个结果是手臂後弯的程度降低。身体的旋转对於加强手臂後 弯相当重要。手臂後弯得愈多，球速愈快。从下图中可以看到Zito的手臂後弯程度已经不 若以往。 另一个和挥臂相关的重点是手臂後弯的的方向要和肩膀的旋转平面相同。愈多"跷跷板"式 的姿势，愈容易让手臂後弯的的方向不对。 接下来，我们可以看到2008年Zito投完球後奇怪的後脚姿势： 就像是出手前的姿势，我们也常常可以从投手投完球後的姿势来了解这个投手的投球效率 。把现在Zito奇怪的後脚姿势和以前的他来比较一下。这暗示了"推球"的出现。 这个後脚姿势同时也暗示了身体在腰部臀部旋转的减少。显然他在2008年的旋转效率比起 2000年已经大大减少。 很有可能Zito和大多数的教练想法一样，认为出手点愈前面愈好。没有一件事比这个想法 更蠢。 尝试让出手点更前面是是最容易降低球速和尾劲的方法。这会造成恶性循环。当投手更想 把出手点往前延伸，就会造成更多的直线运动，也就是说造成更多的"用力丢球"。当他愈 想"用力丢球"，他对球的控制力就愈低。最容易被大家看到的现象是这位投手没办法把球 压低。 Zito在2008年和2000年的这些不同已经足以产生4-5 mph的球速下降和控球问题。 我在这边用模拟软体模拟了92-mph版本的Zito。 假如有任何巨人队的人员想跟我请益，我会很乐意告诉他们我的想法，关於怎样重新产生 一个92-mph版本的Zito... === 注:解释一下前面所谓的"南北"和"东西"。"东西"指的是横向的运动、"南北"指的则是纵 向的运动。想像一下地图的方位应该不难理解。 --

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