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What was the difference in Kershaw's starts?

After allowing just one hit and recording thirteen strikeouts against the Giants, Clayton Kershaw allowed six runs in only 4.1 innings against the Astros. What was the difference in pitching a gem and getting pounded? Did he throw softer, not get his pitches to break, have bad location, or was he just a victim of bad luck? Let's take a look.
SF전에서 1피안타 13K를 기록한 후 커쇼는 어제 4.1이닝동안 6실점이나 했다. 6일만에 무엇이 이리도 달라졌는지 알아보자.

Here's a chart showing the break on each of Kershaw's pitches in inches. The chart shows pitches from his last start in Houston and the start before against the Giants. 0 represents a ball with no spin, so fastballs are above 0 on the y-axis because they have backspin, causing them to rise. Curveballs are below 0 on the y-axis because their topspin causes them to drop. The viewpoint is from behind homeplate.
이 그래프는 지난 SF와 어제 경기의 피칭내용이다. 0은 스핀이 없는 볼을 뜻하며 통상 페스트볼은 y축 상단에 위치하고 있고, 커브는 y축 아래에 위치하고 있다.

Clayton's fastballs and changeups in Houston didn't have as much vertical rise, meaning they didn't have as much backspin on them as in San Francisco. I don't think this would hurt his pitching though. His curveballs actually had more break against the Astros and he threw a higher precentage of them for strikes (53% compared to 35%). So movement wasn't the problem. One other note, you may notice that Kershaw used his changeup a lot more against the Astros. He used it 11 times compared to just 5 against the Giants. It doesn't seem to be a big factor, although the Astros did have a single and a double off of his change up.
어제 페스트볼과 체인지업은 SF전에 비해 y축에 더 근접되어있지 않았고, SF전만큼 많은 백스핀이 없었다는걸 의미한다. 어제 커브는 SF전에 비해 더 많은 브레이크가 걸렸고, 스트라익 비율(SF전 35%, HOU전 53%)도 더 높았다. 또한, 어제 그는 더 많은 체인지업(SF전 5개, HOU전 11개)을 던졌다. 어제 체인지업의 대부분이 안타로 연결되긴 했지만, 그리 큰 요인은 아니라고 생각한다.

Here's a graph showing the velocity of Kershaw's fastballs. The pitches are in order of when they are thrown so the points on the left are at the start of his outing and those on the right are at the end of his outing. You can see a dropoff in velocity at the end of his start in San Francisco, so he was probably fatigued then. Otherwse there seems to be a gradual drop in velocity, which is normal.
아래의 그래프는 페스트볼의 구속을 나타낸 차트다. 촤트 좌측은 그의 투구 초반이고, 우측은 투구 후반을 표시했다. 당신은 SF전 게임 후반부에 구속이 급격히 감소한걸 캐치할 수 있을 것이다. 이건 그가 게임 후반부에 극도로 지쳤다는 걸 의미할 것이다. 반면, 어제 구속은 서서히 떨어졌고, 보통 이런식이 정상이다.

His average fastball velocity against the Giants was 95.3 MPH and against the Astros it was 93.9 MPH. He threw slightly harder against the Astros but still didn't generate a similiar amount of swings and misses. Chalk that up to the Astros offense. He also threw a higher percentage of fastballs for strikes in Houston, 69% compared to 64.5%.
SF전 평균 구속은 95.3마일이었고, 어제는 93.9마일이었다. 분명 어제 더 힘든 투구였고 헛스윙의 비율도 달랐고, 페스트볼에 대한 스트라익 비율(SF전 64.5%, HOU전 69%)도 더 높았다. 이건 휴스턴의 타선이 더 좋다는 증거일 것이다.

Here's a chart showing his curveball velocities in the two starts. He threw at basically the exact same velocity on curveballs in each start. Not much to take from this, it seems from the data available the Kershaw's curveball was at least as good if not better in Houston, but he just didn't strike guys out with it. His only strikeout only a curveball was when he got Lance Berkman to swing through a curveball in the dirt.
윗 그래프는 두 번의 경기에서 그의 커브 구속을 나타냈고, 구속은 거의 비슷했다. 단지 HOU전이 아니더라도 그의 커브는 꽤 괜찮은 편이고, 그는 삼진만 잡으려고 애쓰지 않았다. HOU전에서 커브로 삼진잡은 건 버크만(Lance Berkman) 뿐이었다.

This is a graph of Kershaw's release point in the two starts:

It seems he was releasing the ball just a bit lower against the GIants. I doubt this had any serious effect but it is interesting that there was a difference between the two starts. These last two charts show the final pitch of each at-bat and what the result was. The first chart shows his start against the Giants and the second chart shows his Houston start.
SF전의 공이 조금 더 낮게 컨트롤되었고, 최근 두 경기의 차이는 그리 심각한 수준은 아니라고 생각한다. 아래 두 차트는 각각의 타자 마지막 공과 그 결과다. 첫 번째 그래프는 SF전이고 두 번째 그래프는 HOU전이다.

It looks like the main causes of Kershaw's poor start are just facing a better offense and having some bad luck. Pitches the Giants' hitters were unable to handle the Astros' hitters laced for line drives all over the place. The Astros were 7-12 on pitches in the strike zone while the Giants were just 1-14. You can also see that Carlos Lee's home run was actually out of the strike zone.
HOU전의 안좋은 결과는 더 좋은 타자와 상대했고, 단지 운이 나빴을 뿐인거 같다. SF타선에게 먹혔던 공은 휴스턴 타선에게 허용되지 않았고, 존에 들어오는 투구에 대해 휴스턴 타선은 7-12를 기록했고, SF는 1-14를 기록했다. 카를로스 리(Carlos Lee)의 홈런은 분명 존 밖이었다.

I wouldn't be too worried about Kershaw's poor performance on Tuesday. He was throwing harder and got more break on his pitches, but Astros' hitters were on their game. He couldn't get swings and misses in two-strike counts and the Astros got lucky on balls in play with a .410 BABIP. Against the Giants his 13 strikeouts kept them from even putting the ball in play much and their only hit was on a home run. As with most things, he's not as bad as he looked against the Astros and he's not as good as he looked against the Giants.
어제에 허접한 투구에 대해 난 걱정을 하진 않는다. 더 어려운 투구를 했지만, 휴스턴 타선이 게임을 지배했다. 커쇼는 투 스트라익 이후에 헛스윙을 유도하지 못했고, 휴스턴 타선이 때려낸 공은 .410의 BABIP(Batting Average on Balls In Play)를 기록했다. 휴스턴전에서 그의 투구는 그리 나쁘지 않았고, SF전에서는 그리 좋지도 않았다.