Intermediate

캐스팅 (타격)

Also known as: 손 캐스팅, 배링 아웃, 긴 스윙

Definition

캐스팅은 손과 배럴이 직접적인 경로 대신 몸에서 멀리 넓은 호를 그리며 벗어나는 스윙 결함으로, 배트 스피드를 죽이고 몸쪽 pitch 대응력을 제한한다.

캐스팅된 스윙에서는 앞팔꿈치가 일찍 바깥으로 펴지며 배럴을 넓게 끌어당겨, 배럴이 이동해야 할 거리를 늘리고 컨택트존에 머무는 시간을 줄인다. 캐스팅은 '배럴을 공 안쪽에 유지하기'의 반대다. 캐스팅하는 타자는 가운데-바깥쪽 pitch는 가끔 칠 수 있지만, 몸쪽 pitch에서는 정기적으로 핸드컵당한다. 플레이트에서 배럴이 손보다 너무 바깥에 있기 때문이다. 해결책은 대체로 핸드 패스 교정이다. 배럴을 바깥으로 미는 대신 노브를 공 쪽으로 이끄는 것이다.

Beginner tip

Use a resistance band attached to your back elbow during dry-swing practice. This means the band keeps the elbow connected to the body during the early swing and physically prevents the elbow-fly that initiates the casting arc.

Advanced note

Film your swing from directly behind the pitcher's perspective and check that the barrel tip is not visible to the left or right of your body line until the launch phase. This comes from this angle, a pure inside-out swing keeps the barrel invisible behind the body until the barrel fires through the zone.

Example

그는 타석마다 몸쪽 패스트볼에 핸드컵당했다. 영상은 컨택트 전에 배럴이 손 바깥에 위치하는 캐스팅 동작을 드러냈다.

Why it matters

캐스팅은 SwingVantage가 아마추어 타자에게서 감지하는 가장 흔한 메커닉 결함 중 하나다. 이를 일찍 발견하면 교정하는 데 훨씬 오래 걸리는 굳어진 보상 동작을 예방할 수 있다.

How it shows up on video

On video, casting is identified by measuring the position of the barrel tip relative to the hands at the earliest phase of the swing. This means if the barrel moves outside the hands before the knob has directed toward the contact zone, casting is occurring. Common error signatures include the front elbow flying outward visibly in the first frame of the swing (the most recognisable casting tell), the barrel tip appearing in front of the body line. At the same time, the hands are still at load position. The barrel arriving at contact at a steep angle relative to the pitch plane rather than matching it from behind.

Common mistakes

Firing the front elbow outward to generate power. This pulls the barrel outside the hands and sets off the entire casting sequence before the swing has even developed
Using an arm-dominant swing where the hands are pushed rather than pulled. This means pushing the hands outward inherently extends the front elbow and is mechanically identical to casting regardless of intent
Over-correcting for being jammed on inside pitches by moving the contact point forward. This requires earlier barrel commitment and actually makes the casting tendency worse rather than better
Drilling opposite-field hitting in ways that cue hitting "around" the ball rather than through it. This means an around-the-ball cue produces a casting arc on outer-half pitches that then bleeds into all pitch locations

In SwingVantage Motion Lab

SwingVantage measures the barrel-to-hands distance at the onset of the swing and plots how this distance changes through the first 30% of the swing arc. A positive and increasing barrel-to-hands distance in the early swing phase is the quantitative signature of casting. This allows the system to flag and score casting severity before looking at contact outcomes.