Pahalang na Liko
Also known as: arm-side run, glove-side cut, horizontal movement
Ang horizontal break ay ang paggalaw patagilid na nabubuo ng isang pitch mula sa spin, sinusukat sa pulgada patungo sa arm side (positibo) o glove side (negatibo).
Tulad ng IVB, sinusukat ang horizontal break matapos tanggalin ang natural na paggapang na mayroon sana ang isang bolang walang spin. Ang mga sinker at two-seamer ay may positibong (arm-side) horizontal break; ang mga cutter at slider naman ay may negatibong (glove-side) break. Ang kombinasyon ng horizontal at vertical movement ang tumutukoy sa hugis ng isang pitch at ginagamit para pagsamahin ang mga pitch na magandang mag-tunnel. Ang matitinding horizontal mover — mga sweeping slider na may 15+ pulgada ng horizontal break — ay lalong tumatampok habang ginagawang actionable ng tracking data ang mga movement profile.
Learn to read your own horizontal break by pitching in front of a camera set up directly behind the pitcher and watching how far each pitch drifts laterally from the expected straight-line path to the catcher's glove.
Plot your arm-side and glove-side pitches on a movement chart and identify which pairs create the widest horizontal separation at the plate. This means those are your most effective two-pitch tunnels for maximising lateral stress on the hitter.
Example — Sa report ng tracking system
Ipinakita ng sweeper niya ang 17 pulgada ng horizontal break, na gumawa ng swing-and-miss noong umaasa ang mga hitters ng fastball ngunit nakatanggap ng pitch na tumakbo ng isa't kalahating talampakan palayo.
How it shows up on video
Horizontal break is visible on video as lateral movement away from the expected straight-line trajectory. A sweeping slider's break is observable to the naked eye in the final 20 feet of flight. Common errors affecting horizontal break include a spin axis that is too vertical (converting horizontal break potential into IVB), uneven grip pressure that produces varying amounts of side-spin between reps. A shortened delivery that reduces the distance the ball travels and therefore the total movement accumulated before the plate.
Common mistakes
- Confusing total spin rate with horizontal break potential. This means a pitch can have high RPM but poor horizontal break if the spin axis is oriented vertically rather than laterally
- Locating an arm-side breaking pitch at the inner edge against same-handed hitters where the movement direction runs toward the plate rather than away from the swing path
- Maximising horizontal break at the expense of vertical break. This produces a pitch that stays at one height and moves only laterally. This means giving hitters a predictable plane to hunt in the zone
- Throwing high-horizontal-break pitches from uneven arm angles. This changes the movement direction and makes it impossible to locate the pitch reliably to the intended zone edge
In SwingVantage Motion Lab
SwingVantage measures lateral trajectory deviation across rep sequences and plots horizontal break magnitude on a pitch-shape chart alongside IVB. This gives pitchers a visual representation of their full movement profile. The system identifies whether horizontal break is stable across a session or drifting. This means which can indicate grip fatigue or mechanical uneven results in the wrist and forearm.
Related terms
- Patayong Liko (IVB)Ang induced vertical break ay ang vertical na movement na nakakamit ng isang pitch mula sa spin lamang, sinusukat laban sa isang haka-hakang bolang walang spin — na hinihiwalay ang Magnus effect mula sa grabidad.
- Slider na BolaAng slider ay isang breaking ball na may horizontal na movement at kaunting pababang tilt, mas mabilis kaysa sa curveball at karaniwang mas matalas ang huling break.
- Fastball na CutterAng cutter ay isang fastball na may huling movement patungo sa glove side — mas malakas kaysa sa slider, mas maliit ang break kaysa sa slider — na sumasakal o gumugupit palayo sa mga hitters.
- Sinker na Two-SeamAng two-seam fastball ay hawak sa dalawang seams at karaniwang gumagalaw patungo sa arm side at pababa, na nagpapalabas ng mas maraming ground ball kaysa strikeout.
- Seam-Shifted Wake (SSW)Ang Seam-Shifted Wake ay isang aerodynamic effect kung saan ang di-nakasentrong oryentasyon ng seams ay nakakagambala sa daloy ng hangin nang asymmetrical, na gumagawa ng movement na hindi mahuhulaan mula sa spin rate o axis lamang.
- Bilis ng Ikot (Paghagis)Ang spin rate ay kung gaano kabilis umiikot ang bola sa revolutions per minute (RPM) matapos umalis sa kamay — ang mas mataas na spin ay nagpapalaki sa Magnus effect at nagdaragdag sa movement ng pitch.
Related guides & benchmarks
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