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http://tinyurl.com/6dur8c By Alex Eisenberg April 14, 2008 Over a year has past since Francisco Liriano underwent Tommy John surgery and the much awaited return of Liriano came and went as the phenom threw his first pitches since 2006 on Sunday. Carlos Gomez, a former pro player, Hardball Times and Baseball Think Factory writer, and now a pro scout for the Arizona Diamondbacks broke down Liriano's mechanics last year shortly after Liriano's injury and had this to say: "Leave the kid alone. Note to the Twins: Forget this ever happened. Change nothing. Don’t slow him down. Don’t have his arm action get longer. This is a fluke injury. His arm is getting used to the new stresses he is putting on it. If anything, work on making the ligaments stronger. Train the elbow to handle those new loads and more" Of course, opinions varied. Chris O'Leary of The Pitching Mechanic said this: "As it turns out, Liriano's mechanics resemble those of Mark Prior. This makes it logical that Liriano would have similar problems." Before getting into my opinion, let's do the before-and-after. First up is the animation Gomez used for his analysis: 自从2006年Francisco Liriano受伤之後,不知不觉间已经过了一年多了... Carlos Gomez,这位前THT的投球分析专家、现在响尾蛇队的球探,在去年Liriano受伤後 曾写了一篇分析文章,文章上这样说: "不要为了避免受伤去改姿势,他已经习惯现在的姿势了,这次的受伤只是个意外。如果真 的要做什麽改变的话,只需要再加强手肘部份以强化韧带就够了" 当然,也有人持相反意见,Chris O'Leary说: "照现在的情况看来,Liriano的投球机制就像是Mark Prior,这也让Liriano一直有伤病问 题" 在我的分析开始之前,先来看看Liriano受伤前後的几段影片: First thing we should take note of is the tempo, where the pre-injury Liriano is faster. We can see this because the clip is synchronized to release and the pre-injury Liriano has a higher leg kick and therefore a longer distance to travel. However, the key thing here is the arm action. Liriano showed off an earlier hand break on Sunday, which isn't a good thing. The biggest arm action difference is the scap load. In Gomez's words: "Quick, aggressive, short. Yes, yes, and yes....Frame 20—Look at that position. You will see a still shot of this position later. WOW!! Look at the level of horizontal loading of the arm. In other words, he reaches back well. Not towards 2nd base, but towards 3rd base. Also note the elbow above the arm. Love it." What about now? The differences look pretty obvious. Gone is the pre-injury horizontal loading, where he would load his arm toward third base (not second) and would bring his elbow above shoulder's height. Gomez also said this: "He doesn’t have the separation between upper and lower body as a lot of power guys. His hips lead, but it seems like he rotates upper and lower body as a unit more than a lot of power pitchers." This aspect does remain the same. Without that separation, Liriano might possibly have needed his pre-injury arm action to produce the kind of quality stuff he threw. And that is the question: was his pre-injury arm action the key factor in the quality stuff he threw? A couple still shots to illustrate the differences below. Both stills are immediately before the forearm rises above the elbow and gets ready to assume a throwing position. The image on the left (5 frames before release) is one of the stills Gomez used in his analysis. The image on the right (6 frames before release) is Liriano on Sunday: 首先会先注意到的是节奏,受伤前的Liriano比较快。他有较高的抬腿和更长的跨步。 不过,真正的重点是挥臂。在周日的复出战中,Liriano表现了一个较早启动的挥臂,这不 是件好事。可以在scap load(手臂往後拉的动作)中看出这之间的差异。在Gomez之前的 分析中提到: "快,又有侵略性...哇,看看他现在的手臂,向後拉得多漂亮?能量累积得真好。注意他 的手肘比手臂高,好家伙" 那现在呢? 没了,好动作通通都没了。 另外Gomez也有提到: "和一般的强力投手不同的,他上下半身协调的很好,在开始转腰的时候看来就像是完整的 个体" Liriano还是有保持这项优点。也许只要找回挥臂动作就能找回之前的stuff。问题来了: 挥臂动作是Liriano受伤前那种stuff的来源吗? 再来看看几张挥臂时的图片吧: The major differences are boiled down to two still images. An aggressive fury of power and momentum on the left and a safer, controlled action on the right. My opinion? I prefer guys with aggressive mechanics but to do everything possible to lower the risk of injury without hurting the quality of the pitcher's stuff. You have a risk/reward scenario here. If I had a choice of: A.) taking the pre-injury Liriano with the pre-injury mechanics or B.) taking Liriano with "safer" mechanics but producing only #3 starter stuff I would take choice A. Any starter that can give you quality innings is valuable, but true #1 starters, true aces are of an extremely rare breed. So I take my chances. The question I have is if his mechanics can be altered to where the quality of his stuff rises close to where it was before, but also lessens the risk of injury. Enough About Mechanics, What About Results?!?! His fastball, normally 93 - 95, sat at around 90 while his slider lacked that hard bite we're used to seeing. Both pitches also lacked oomph. As expected, Liriano was rusty. He didn't command his pitches all that well. However, it isn't his control I would worry about. We need to see if his stuff can return to the quality it once was or at least get close to it. One start is hardly enough to make the judgements on, so my advice would be to sit back, see how he develops, and make changes only when (or if) it becomes obvious his stuff isn't coming back. When that moment is only his coaches can decide. 受伤前的动作看来充满侵略性、power、和动量。受伤後看来是个比较温和而容易控制的动 作。 我的意见?我希望在不降低投手的stuff的情况下来减少受伤的风险。假如给我两个选项: A.)照旧 B.)现在的姿势,降低受伤风险,但也使stuff下降到三号投手的水准 我会选A。一个工作马很有价值,但一个真正的ACE更加难得。我现在对他的疑问是,他能 不能在降低受伤风险的同时回复他以往的stuff? 所以,结果呢? 速球大概在90mph左右,滑球犀利度不若以往,现在的动作看来缺少活力。 Liriano现在的投球看来还还有点生疏,有点不太能控制球。当然,我不担心这一点,比较 要注意的是stuff能不能回到过去? 当然,一场比赛的样本数还不太够,我会再多观察几场,要是他的stuff还回不来的话我会 再写出我的建议。 --



※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.112.5.3
1F:推 abing75907:推翻译~ 话说PRIOR的投球机制不好吗? 怎麽个不好法? 04/18 00:18
2F:→ abc12812:http://tinyurl.com/22tvvs 04/18 00:22
3F:→ ninini:nice 04/18 02:30
4F:→ larcenciely:push~ good composition 04/18 02:31
5F:推 leaveaway:push~ 04/18 10:41
6F:推 dblsesame:the separation between upper and lower body 的部分 04/25 17:46
7F:→ dblsesame:separation是产生球速的来源之一, Liriano的separation 04/25 17:46
8F:→ dblsesame:和一般power pitchers比不是很明显 可能他的球威是靠手 04/25 17:54
9F:→ dblsesame:术前那种arm action来的 原文并没有称赞他上下协调的意 04/25 17:59
10F:→ dblsesame:思 04/25 17:59







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