Re: [洋基] Chien-Ming Wang was broken. Did they …

看板NY-Yankees作者leddy (耿秋)時間15年前 (2009/05/25 09:09)推噓17(17推 0噓 12→)

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看來現在已經在想辦法修正放球點過高的問題。 http://yankees.lhblogs.com/ UPDATE, 1:11 p.m.: Since several of you mentioned it – and I’m all about obliging the loyal readers – I chatted briefly with Dave Eiland this morning about Wang’s issues with his sinker. Specifically, we talked about his release point and arm slot. Eiland said that yes, there’s clearly a difference in Wang’s release point from when his sinker was consistently good to right now. What they are working with Wang on, Eiland said, is “staying over the rubber” longer. As you all know, Wang has a very deliberate wind-up – he raises his leg incredibly slowly and does a little “tap-tap” with the ball before throwing. The problem, according to Eiland, is that the “tap-tap” is coming a little later and Wang’s lower body has already started to push forward toward the plate. That means he’s forced to release the point at a higher point and thus, there’s no bite on the sinker and it hangs up. If Wang is able to stay over the rubber long, Eiland said, the “tap-tap” will take place with his body still in one location – as opposed to the lower half having already started forward – and his release point will be lower again. That’s what they’re focusing on now. Sorry if this is a little more technical than some of you might be interested in – I know it would be for me – but since Wang’s issues have been dissected by many on here, I thought those of you curious might find it interesting. ※ 引述《leddy (耿秋)》之銘言： : http://statspeak.net/2009/05/chien-ming-wang-was-broken-did-they-fix-him.html : 球速回來了，伸卡球的水平的movement有了，但垂直的movement掉得不夠...甚至比前三 : 場先發掉得還少.... : 小王想要用更高的放球點來投球....Orz : Statistically Speaking : May 23, 2009 : Chien-Ming Wang was broken. Did they fix him? : Chien-Ming Wang returned to the major league mound on Friday night in relief : of the struggling AJ Burnett. In three innings of work, he allowed 2 runs on : 6 hits (one home run) and one walk. That outing lowered his season ERA by 9 : 1/2 points... to a cool 25.00. Yikes. : Wang had been rehabbing what was diagnosed as essentially weakness in his : hips, which reportedly resulted from a foot injury he sustained last season : in Houston while running the bases. He had been doing relatively well in : rehab starts in AAA, and the Yankees needed a long reliever for the game : after burning the bullpen the night before. I mentioned above Wang's results : for the night, but let's take a look at how he got there, through the eyes of : pitch f/x. : His average fastball was a strong 92.5 mph, averaging about 10 inches of : horizontal movement and 6.8 inches of vertical "rise." How does that compare : to the beginning of this season, when he was getting bombed, and to 2008, : when he was pretty good? Here's a grid, for easier comparison: : Game Avg. Velocity Max. Velocity Horiz. Mmt(in.) Vert. Mmt (in.) : 2008 91.8 ~95 11 4.9 : 2009 90.7 ~93 9.3 5.7 : Tonight 92.5 95 10 6.8 : Alright, so we see that his velocity tonight was back where it should be, and : his horizontal movement is creeping back up. But what's up with the vertical : movement? He's a sinker-ball specialist, remember. The lower the value of the : vertical movement, the more the ball is "sinking." Curveballs, which have a : sharp downward break, are in the negatives. Tonight, 50% of his balls in play : were groundballs, might that have been a fluke? : Let's look at some individual games and find out. One of his best games in : 2008 happened on May 2nd against the Mariners. He had 5 K's, 2 walks, in 6 : innings, allowing one run. More importantly (for our purposes), the M's had : 10 groundballs versus only 2 flyballs. In that game, Wang had 14.5 inches of : horizontal movement, which is just fantastic, and 4.5 inches of vertical : movement, which is also great. Going back a month earlier to opening day : (which I was at), Wang threw 7 innings with 16 (!) groundballs, versus only 3 : flyballs. In that game, the numbers were almost identical to the gem against : the Mariners. He had 13 inches of horizontal movement and 4.5 inches of : vertical movement, both of those of course being fantastic for a : sinker/2-seamer. : So it would seem that it's the vertical movement that's causing him problems. : here's the part that completely threw me when looking into this: Chien-Ming : Wang's vertical movement on his 4/8 and 4/18 starts of this season were 5 : inches and 3.5 inches, respectively. Remember, in those games he got : absolutely bombed to the tune of 5 innings and 15 runs. His ball was sinking, : but it was still getting rocked. Here was my reaction upon seeing this. : My next stop was the location graphs available on Brooks Baseball. If you : look at Friday's game, you'll see that there were very few balls just below : the strike zone. Compare that to his opening day start from 2008, and you see : some difference. The Friday start isn't nearly as down in the zone. These two : starts, both from earlier this season, are even worse. Ok, so that was a lot : of links all at once. If you got confused with keeping track of what's what, : or you just don't want to click through, here's what it means: Wang isn't : keeping the ball down this year nearly as well as he did in 2008. While his : ball is sinking, it's not being thrown down in the zone enough to be : effective. : Finally, here is what I believe to be the main reason for his problems. There : are 5 links below, all of them are from games already referenced in this : post. What the images show is release point data, from pitch f/x. Simply put, : the 2008 release points are from good games, the 2009 release points are from : bad games. Try opening each one in a different tab and switch back and forth : to more clearly see the difference. : 4/1/2008 5/2/2008 4/8/2009 4/18/2009 5/22/2009 : Pay special attention to the first two versus the last three. See how the : first two graphs have the cluster of points lower and farther away than the : last three? This means that Wang's release point in 2008 was lower than it : currently is. As you can see, his stay on the DL has done nothing to change : that--it is still higher than it was in two of his most dominant starts of : 2008. : The thing that troubles me most as a Yankee fan is that neither Wang nor the : Yankees seem to realize this. Take this snippet from beat writer Pete Abraham : on April 14th, after Wang allowed 8 runs in an inning of work the day before: : "Wang seemed stunned. He said the issue was where he released the ball, which : was off to the side instead of over the top. A sinkerball pitcher wants to : stand tall on the mound and throw the ball on a downward plane. Otherwise the : ball floats over the strike zone and you see what happens." Despite having : success in 2008 with a lower release point than he had in the early stages in : 2009, he wanted to raise his release point even more. : To answer the question in the title, "did they fix him?" As it stands right : now, I don't think they did. : --Chien-Ming Wang's release point has been discussed previously at River Ave. : Blues. : --Thanks to Brooks Baseball and FanGraphs for pitch f/x data. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.225.145.105

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