Lemparan Tidak Sah
Illegal pitch adalah delivery apa pun yang melanggar aturan — paling umum pitch di luar jendela arc legal, bola yang dilempar dengan spin, atau release dari posisi ilegal.
Pelanggaran illegal-pitch umum dalam slow pitch termasuk: arc terlalu rendah (di bawah 6 kaki) atau terlalu tinggi (di atas 12 kaki); memberikan spin yang disengaja (memutar pergelangan tangan dengan tajam saat release); delivery dua-tangan; atau pitching dari luar rubber. Ketika illegal pitch dipanggil, pemukul boleh mengambil pitch sebagai ball atau memilih swing. Pitcher belajar membaca kecenderungan wasit dan mengatur arc mereka agar tetap legal dan melindungi tim mereka dari count gratis.
If an umpire calls your pitch illegal, ask in particular which rule was violated. This means arc, speed, or release. This means. As a result, you can fix the correct issue rather than changing the wrong thing.
Film your practice pitches from the side with a reference marker at 6 and 12 feet to build a visual library of your arc heights across different speeds and effort levels.
Example
Pitch naik hingga 14 kaki — jauh di atas maksimum — dan wasit segera memberi tanda "illegal pitch," memberi pemukul sebuah ball.
How it shows up on video
An illegal pitch is identifiable on video by comparing the ball's peak height against a known reference. This means a flat delivery that never visibly rises above the batter's helmet is almost certainly below 6 feet. A spin-enhanced pitch shows rapid rotation visible as a visible seam blur or an unusual lateral curve that a standard arc would not produce. The umpire's call is definitive, but video review helps pitchers self-diagnose between games.
Common mistakes
- Throwing too hard and flattening the arc below 6 feet in the excitement of a key at-bat, the most common illegal-pitch type in competitive slow-pitch
- Adding wrist-snap to generate extra spin for movement, not realizing the association classifies intentional spin as an illegal pitch
- Failing to come to a complete stop with both feet on the rubber before starting the delivery. This some associations classify as an illegal start position
- Pitching from the wrong distance after moving to a different league, unknowingly using 46-foot mechanics from a 50-foot rubber or vice versa
In SwingVantage Motion Lab
SwingVantage can flag pitch deliveries where the estimated arc height falls below the 6-foot threshold from video analysis. This gives pitchers objective feedback to self-correct before a game situation.
Related terms
- Lemparan SahLegal delivery dalam slow-pitch softball adalah pitch yang dilepaskan underhand dengan gerakan mulus dan berkelanjutan serta tiba dalam ketinggian arc yang dibutuhkan — biasanya antara 6 dan 12 kaki — di atas plate.
- Aturan Tinggi Lengkung LemparanArc height regulation mendefinisikan ketinggian minimum dan maksimum yang dibutuhkan yang harus dicapai delivery slow-pitch — biasanya 6 hingga 12 kaki — agar dipanggil pitch legal.
- Zona Strike (Slow-Pitch)Strike zone slow-pitch (USA Softball) adalah ruang di atas home plate antara bahu belakang dan lutut depan pemukul; strike adalah pitch legal dan ber-arc yang tepat yang melewati zone tersebut dalam penerbangan, sementara liga mat-play sebaliknya memanggil strike pada pitch yang mendarat di plate atau strike mat.
- Plat PitcherPitching rubber adalah lempengan karet putih di mound pitcher tempat pitcher harus memulai dan menyelesaikan legal delivery. Meninggalkan atau menyeret dari rubber secara salah menghasilkan illegal pitch.
Related guides & benchmarks
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See a sample Slow-Pitch Softball report first