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Beginner

Regulação da Altura do Arco

Also known as: janela de arco, altura do arco do arremesso

Definition

A regulação da altura do arco define a altura mínima e máxima exigida que uma entrega de slow-pitch precisa alcançar — normalmente 1,8 a 3,6 metros — para ser chamada de arremesso legal.

A janela de arco existe para tornar o arremesso previsível e batível: baixo demais e ele joga como fast-pitch; alto demais e cai quase reto para baixo, sem dar às rebatedoras nenhuma referência horizontal de timing. Arremessadoras miram no meio da janela (2,4 a 3 metros) porque é indulgente, repetível, e mantém as rebatedoras em dúvida sobre o ângulo de descida. A medição do arco é um julgamento da árbitra, então consistência vence alturas extremas.

Beginner tip

Pick a visual target. This means like the top of the chain-link fence or the top of the backstop. This means and aim your pitch to peak at or just below that reference on every delivery.

Advanced note

Develop three distinct arc heights (low legal, mid, high) and learn to vary them intentionally within a single at-bat to disrupt the batter's timing rhythm without changing your arm speed.

Example — Durante o aquecimento pré-jogo

Uma arremessadora consistentemente coloca a bola num arco de 2,7 metros, o ponto ideal da janela legal de 1,8 a 3,6 metros, mantendo a árbitra satisfeita e as rebatedoras desconfortáveis.

Why it matters

Arremessadoras que dominam a janela de arco pressionam as rebatedoras, em vez de presentear bases de graça. O SwingVantage ajuda times a acompanhar as tendências de arco tanto de sua arremessadora quanto das adversárias.

How it shows up on video

Arc height is best verified from a straight side-on camera angle. The ball should peak clearly above the pitcher's head (roughly 6 feet) and preferably at 8 to 10 feet for a hittable arc. A ball that appears to track at or below the pitcher's shoulder-height at its peak is likely under the minimum. A ball peaking above the backstop frame (typically 10 to 12 feet) may be approaching the maximum in leagues that enforce one.

Common mistakes

  • Pitching to the same arc height regardless of batter and game situation. This makes every pitch read the same way and allowing experienced hitters to time it perfectly
  • Sacrificing arc height for speed in a tight game, which risks an illegal-pitch call and gives the offense a free base
  • Not adjusting arc height when pitching into headwinds or tailwinds, allowing wind to push the arc outside legal limits without the pitcher realizing it
  • Confusing arc height with backspin. This means adding backspin can increase visual arc height without actually raising the peak. This can mislead pitchers who judge arc by feel rather than measurement

In SwingVantage Motion Lab

SwingVantage measures peak ball height from calibrated side-on video and compares it to the 6-foot minimum, flagging pitches that risk illegal-pitch calls and helping pitchers build consistent arc muscle memory.

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