Sports Ballistics Lab

Infield Line Drive Ballistics & Reaction Physics

Spatial trajectory, perceptual reaction limits, and defensive safety margins inspired by the Geraldo Perdomo incident

Interactive Scale MLB Infield (Draggable Fielder & Ball Origin) Scenario: Geraldo Perdomo Line Drive
Click or drag anywhere on the field to position the infielder or inspect the line drive intercept
Presets:

Context & Scientific Basis

On line drives hit over 100 mph, a baseball travels at ~150 feet per second. When Arizona Diamondbacks shortstop Geraldo Perdomo was struck in the field, human physiological thresholds—visual saccadic recognition (180ms), neural motor activation (120ms), and biomechanical limb movement—were compressed into a fraction of a second. This simulator applies standard MLB aerodynamic drag coefficients ($C_d \approx 0.31$) to model true deceleration and spatial reaction windows.

Ballistic Telemetry T=0ms
Arrival Time
756 ms
Home plate to fielder plane
Intercept Velocity
94.8 mph
Accounting for air drag
Ball Height at Target
4.2 ft
Torso/head threat zone
Kinetic Energy
130 J
Impact force potential (145g)
⚠️ Extreme Threat: Reaction window barely exceeds human latency threshold!
Human Perceptual Latency Timeline

Breakdown of involuntary neural processing vs available glove travel time:

Vis 180ms
Neu 120ms
Mot 150ms
Glove 306ms
Visual Saccade (180ms)
Cortical Decision (120ms)
Motor Signal / Flinch (150ms)
Usable Glove Travel Window
Perceptual Floor: 450 ms Glove Surplus: +306 ms
Intercept Probability: 68% (Difficult Play)
Safety & Tactical Recommendation

At 122 feet, a 106 mph line drive gives Geraldo Perdomo approximately 306 milliseconds to position his glove after basic neural reaction. A 5-foot backward depth adjustment increases reaction cushion by +42 ms.