Re: How Joba can learn about reduced velocity f …

看板NY-Yankees作者numblife時間16年前 (2010/03/13 12:51)推噓23(24推 1噓 20→)

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※ 引述《abc12812 ()》之銘言： : http://riveraveblues.com/2010/03/how-joba-can-learn-about-reduced-velocity-from-lincecum-25027/ : At this point last year, we began wondering about Joba Chamberlain’s : velocity. After throwing in the upper 90s out of the bullpen, and then : mid-90s in the rotation, Joba had been throwing in the low-90s for most of : spring training. This caused particular concern because Chamberlain had : missed more than a month in 2008 with shoulder tendinitis. Without his heat, : would he be as effective a pitcher? : Clearly, Joba needed to make adjustments if his fastball was to average 92 : instead of 95. He didn’t make them consistently in 2009 and it led to a : somewhat frustrating season. Now, as we head into a new season, we’re again : wondering if Joba will recover his velocity, or if he’ll sit in the low 90s : for the foreseeable future. As long as he can make adjustments with his : command and secondary pitches his velocity shouldn’t be a problem. For a : good sample case, we can look to last year’s NL Cy Young winner and the man : picked 31 spots ahead of Chamberlain in 2006. : According to the Pitch F/x gun, Tim Lincecum went from averaging 94 mph in : 2008 to 92.4 in 2009. Yet he struck out hitters at the same clip, gave up : fewer hits, and walked fewer batters. In other words, he made the adjustments : necessary to compensate for diminished fastball velocity. He continues to : work with his new physical realities, and is honing his secondary pitches : again this off-season. In particular, it looks like he’s working with his : slider, perhaps with a goal of throwing it more than 10 percent of the time. : For Chamberlain, the drop-off seems a bit more precipitous. He went from : averaging 95.2 mph in 2008 to 92.5 in 2009. That might appear to mislead, : since it counts Joba’s innings as a reliever, where he threw in the upper : 90s, along with his starts. But he also threw bullpen innings as a reliever : after the injury and averaged just 93.9 mph there. As a starter, from June : into August, he averaged 95.1 mph. I don’t think it’s likely that he : consistently reaches that level as a starter again. : Even so, his velocity matched Lincecum’s last year. One major difference is : that Lincecum adjusted by throwing the fastball less often. When it sat 94 : mph in 2008 he threw it 65.5 percent of the time. But with a bit less zip he : threw it less, just 55 percent. Joba, on the other hand, continued to throw : the fastball frequently, at 63.3 percent. He also focussed on one secondary : pitch, his slider, over another, his curve, while keeping the changeup almost : completely out of his arsenal. Conversely, Lincecum used his two secondary : pitches, change and curve, about equally. He also worked in his slider 7 : percent of the time, more than Joba used the change. : Reducing his reliance on the fastball won’t necessarily make Joba a better : pitcher. After all, if he doesn’t have confidence in his secondary pitches : they won’t be very effective. But I think that continued heavy use of the : fastball will present problems for his development. He certainly can succeed : with it, but he might not be able to do so consistently. And if he can’t do : that, it’s likely to the pen with him. Noooote: 1)從春訓中可以發現張伯倫的球，均速已經來到90麥出頭左右，筆者認為，他應該向盲腸借鏡，不然在可預見的未來，將可能會發生..."不要問，很恐怖"的事... 　　(經版友指正已修改內文)。 (原po再次查詢相關資料：分別為low-90s / mid-90s / high-90s) (90出頭 / 95上下 /90幾接近100) 已作更正，有錯誤之處請不吝指教。 2)張伯倫今年的球速降到跟盲腸去年的球速差不多。然而，不同之處在於，盲腸直球球速降下來，也把它運用的比例減少，搭配更多change & curve ball，　　逐年把速球運用的比例縮減，增加其他球種的運用比例，事實證明，並不影響他的成績，因為這樣的策略之後，他被擊出更少的安打，送出的保送也變少。　3)筆者認為，如果張伯倫依舊過度依賴他的速球，而對其他球種沒有信心的話，　　將會對他的發展衍生出很多問題。 by the way...可否請原po把出處註明一下，我想知道這篇出自哪裡，謝謝：） -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.39.61.214

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