Pitch Tunnel Visualization

Visualize the 23.8-ft tunnel where the batter decides

Overview

The Tunnel feature shows where each pitch crosses the 23.8-ft decision point — the last moment the batter can change their swing decision.

Turning On the Tunnel

Click the Tunnel button in the toolbar. It toggles on/off (green = on).

What You See

Tunnel visualization with two overlaid pitches and yellow tunnel cylinder

Pitch tunnel visualization — the yellow cylinder shows the corridor from release to the decision point

When Tunnel is enabled, the 3D view shows:

  • Yellow rings — one at the release point and one at the 23.8-ft crossing point
  • Transparent yellow cylinder — connecting the two points, showing the “tunnel” corridor

When you overlay multiple pitches, each pitch gets its own tunnel cylinder. If the 23.8-ft rings overlap, those pitches tunnel well.

Reading the Tunnel Data

The left panel shows the tunnel crossing coordinates:

● Tunnel (23.8ft) x=-0.404m, z=1.410m

This is the ball’s position when it crosses the 23.8-ft plane. Compare these coordinates across overlaid pitches — the closer they are, the better the tunnel.

Tunnel + Overlay: A Practical Example

Ohtani’s FF vs ST (2026-03-24)

  1. Search “Ohtani”, select 2026-03-24
  2. Select pitch #7 (FF, 97 mph) — Simulate with Overlay checked
  3. Select pitch #83 (ST, 81 mph) — Simulate
  4. Enable Tunnel

These two pitches have a release angle difference of only 0.234°. Despite a 16 mph speed difference, they pass through nearly the same point at 23.8 ft.

Senga’s FF vs FO (2026-03-19)

  1. Search “Senga”, select 2026-03-19
  2. Select pitch #54 (FF, 95 mph) — Simulate with Overlay
  3. Select pitch #30 (FO, 87 mph) — Simulate
  4. Enable Tunnel and Batter’s Eye

Release angle difference: only 0.095°. The forkball (“ghost fork”) looks identical to the fastball at the decision point.

Tips

  • The tunnel visualization works in all view modes including Batter’s Eye
  • Use frame stepping (← → keys) to pause the animation at exactly the tunnel crossing point
  • The tunnel cylinder radius is approximately 2× the ball diameter — representing the area where the batter cannot reliably distinguish between pitches