투구 추적
투구 추적은 투수의 손에서부터 정점을 지나 콘택트 포인트까지 슬로피치 공의 전체 아크를 시각적으로 따라가는 것으로 — 가파르게 하강하는 공에 대한 타이밍을 통제하는 기본 기술이다.
Slow-pitch tracking is fundamentally different from baseball or fast-pitch tracking because the ball's flight is much slower and its path much longer. It has about 1.0 to 1.5 seconds of air time, versus 0.4 to 0.5 seconds in fast-pitch. That additional time is both an advantage and a trap. Hitters have more time to read the pitch. But the long flight tempts the eyes to drift rather than track the ball continuously from release to contact. A hitter may look at the outfield, check a base runner, or briefly lose the ball against a sky background. Even a half-second lapse in tracking during the descent phase can cost the hitter the arc's exact angle. The hitter may then arrive at contact early or late.
The mechanics of tracking a descending ball require the eyes to drop with the ball as it falls. Some hitters track only to the peak and then freeze their gaze at chest height. The ball arrives lower than they expect, and they pop it upward off the barrel. A hitter who actively drops their chin and follows the ball's descent path can read the exact landing spot. They can then plan the contact point accordingly. This is why coaches cue slow-pitch hitters to "keep the chin down": it is a visual tracking cue, not just posture advice. It keeps the eyes on the descending ball.
Some hitters develop a two-phase tracking habit. First comes peak tracking: following the ball up to its peak to confirm arc height and confirm the pitch is legal. Then comes descent tracking: dropping the eyes with the ball from the peak to contact. This split-phase approach is natural for experienced hitters. That is because the legal arc requirement makes peak height relevant information, not just an intermediate point. If the ball's peak is too low (below 6 feet), the hitter can elect not to swing. The same goes if it is too high (above the league maximum, 10 feet under USA Softball and USSSA rules). Confirming legality at the peak and then committing to the descent is the complete tracking routine.
Tips by skill level
Say "peak" quietly to yourself when the ball reaches its highest point. This deliberate check forces your eyes to confirm the apex before descending with the ball — preventing the most common lapse where hitters lose tracking during the transition from rise to fall.
Read the descent angle during the first few feet of the ball's fall to predict exactly where the contact point will be. A steep arc (near 10 feet) drops quickly — the contact point arrives sooner horizontally and farther out front. A low arc (near 6 feet) arrives on a shallower descent — the contact point is slightly deeper. Tracking the descent angle lets you set your contact point depth before the swing.
Example
타자는 공이 투수 손을 떠나는 것을 보고, 10피트 정점까지 따라간 뒤, 공이 하강할 때 눈을 함께 내려 — 플레이트 앞 1피트의 이상적인 콘택트 포인트에서 공을 만난다.
Why it matters
레이트 트래킹 — 하강 단계에서 공을 놓치는 것 — 은 대부분의 슬로피치 팝업의 기계적 근본 원인이다. 눈이 가슴 높이에서 멈추는 타자는 공이 더 낮게 도착할 때 배럴이 잘못된 플레인에 있는 것을 발견한다.
How it shows up on video
Watch the hitter's chin position from the ball's peak to contact. A hitter with good tracking shows the chin gradually dropping as the ball descends, keeping the eyes aligned with the ball's path. A hitter who loses tracking shows the chin holding level or tilting upward at contact. The classic tell for a pop-up off a ball they thought was higher than it was.
Common mistakes
- Picking up the ball late — tracking only from mid-arc rather than from the pitcher's hand. Early tracking calibrates the arc height and establishes the descent angle before the hitter is required to commit.
- Locking the gaze at the peak rather than following the ball down. A fixed gaze at peak height produces contact at the wrong ball position.
- Looking at the outfield gaps or base runners during the ball's flight — any visual interruption during the descent phase disrupts timing.
- Assuming the ball will arrive at the same height it peaked at — the descent always brings the ball lower, and tracking confirms exactly how much lower.
In SwingVantage Motion Lab
Motion Lab does not track the pitch, so it cannot tell where in the arc you made contact. It tracks your head from pose and flags head drift that can pull your eyes off the ball.
Frequently asked questions
공을 추적하고 있다고 생각하는데도 왜 계속 팝업이 나오나요?
가장 흔한 이유는 정점에서 공을 놓치고 살짝 너무 높은 시선으로 기본값을 유지하는 것이다. 콘택트가 이루어질 때 공은 눈이 예상하는 것보다 더 낮으므로 배트가 그 밑을 지나간다. 공이 정점을 찍을 때 적극적으로 턱을 내려 눈이 정점이 있던 자리가 아니라 하강하는 공에 계속 머물도록 해보라.
공의 어느 부분을 추적하느냐가 중요한가요?
대부분의 코치는 하강 중 공의 아랫부분 절반을 추적하도록 지시한다 — 견고한 발사각을 위해 배럴이 콘택트해야 할 부분이다. 공의 윗부분을 추적하면 그 밑으로 지나가는 스윙이 나오는 경향이 있다.
Sources
Related terms
- 아크The arc is the high, looping flight path a legal slow-pitch delivery must follow. USA Softball requires a peak between 6 and 10 feet (12 feet in senior play). USSSA instead requires at least 3 feet of arc above the release point and caps height at 10 feet above the ground. Hitters time their swing to the ball's descent, not its rise.
- 콘택트 포인트콘택트 포인트는 몸을 기준으로 배트가 공을 맞히는 위치다. 슬로피치에서는 플레이트 앞쪽에 위치해, 배럴이 아래나 위로 잡는 대신 공의 하강 아크와 맞춰 살짝 위로 향하며 이동하게 한다.
- 스트라이드 타이밍스트라이드 타이밍은 아크에서 투구의 위치를 기준으로 앞발이 언제 딛는지를 말한다. 슬로피치 아크를 상대할 때는 앞발이 일찍 — 정점 근처에서 — 딛어야 하며, 손은 뒤에 머물러 파워를 만드는 하체와 상체 사이의 분리를 만든다.
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