※ 引述《WillWaiting ()》之铭言： : [quote] : ... I believe, and I have nothing but intuition to back this up, that : people who throw sliders lose their velocity more quickly than people : who don't. As they get older, and their fastball slows down, they tend : to rely more on the slider. The slider takes away from their velocity. : And before too long, their velocity--and the sharp slider along with : it--is gone. Instead of following the natural way to put force on the : ball, they try to create additional rotation by using their wrist. I've : seen this happen many times. : (Excerpted from "Nolan Ryan's Pitcher's Bible," at 172.) (前略)我相信, 并且可以很直觉地证实这个说法, 就是一旦一位投手开始投滑球, 他会比那些不投滑球的投手更快丧失球速. 当他们年纪渐长, 速球球速开始下滑, 更会倚重滑球. 滑球使他们的速球不再. 不用多久, 滑球会因为球速下降的关系 失去球威. 他们开始藉着手腕的施力加强球的旋转, 而不是像一般传统的模式来 投球. 我看过这样的事情好多次了. (节录自诺兰莱恩的投手圣经, 一百七十二页) : Foreword: The Vanishing Fastball (by Eugene Coleman) : Why, when pitching is so important, is there a shortage of power pitchers? : Velocity has decreased in baseball, to some extent, because young pitchers : don't throw enough fastballs, pitches per workout, or pitches per week. Some : professional scouts believe the problem begins in Little League. Young : players realize that it's easier to trick hitters than to throw a fastball : by them. The end result is a growing number of youngsters with good breaking : balls and below-average velocity. 前言: 消失的快速球 (By Eugene Coleman) 为什麽, 在投手是如此重要的状况之下, 强力投手会有短缺的情形呢? 大环境来 来说, 投手的球速在呈现下滑的景象, 因为年轻投手们在每一次练习,每一周投的 快速球不够多. 有些职业球探认为这个问题从少棒层级就开始产生. 年轻球员觉 得用变化球欺骗打者比使用速球来的简单. 结果就是越来越多年轻球员投的一手 好变化球但是速球却完全不及格. : The trend for high school and college pitchers is similar: College : pithcers today often throw 50 percent off-speed pitches, and the percentage : is even higher in high school. I've charted several successful high school : teams whose pitchers threw 60-65 percent off-speed pitchers. : Many people in professional baseball point to aluminum bats as the source : for changes in basic pitching patterns. The inside fastball, which almost : always jams hitters using wooden bats, loses its effectiveness against an : aluminum bat. Instead of throwing inside, then, pitchers spot their fastball : and use their breaking ball as their out pitch. These young pitchers : basically discard the fastball and do little to develop the strength and : durability of their arms. ... : "Nolan Ryan's Pitcher's Bible," at 9. 同样的, 在高中大学球员也是类似: 现在的大学投手投球内容中大概有五成是变 速球, 这个比率在高中甚至更高. 我观察到几队成绩很不错的高中球队阵中的投 手使用变速球的比率是百分之六十到六十五. 许多职业棒球人指出使用铝棒是改变投手习性的原因. 内角快速球几乎总是使用 木棒打者的罩门, 在面对铝棒时失去了作用. 投手们因此不攻内角, 转而封印自 己的快速球, 转向使用变化球当作是最後武器. 基本上这些年轻投手们放弃了快 速球, 同时也放弃了增进肌肉强度与手臂的耐力, 这些速球投手所必须的训练. --

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