Two-Pitch Tunnel Test
Connect fastball and changeup locations into repeatable three-pitch sequences against both batter sides, then score the complete tunnel.
Foundation
Sequencing
Level
L2 — Core Pair
Length
24 pitches · 16–20 min
Pitches
Fastball · Changeup
Goal: Connect fastball and changeup locations into repeatable three-pitch sequences against both batter sides.
Warmup
Before the first pitch.
Complete a proper throwing warm-up before scoring pitches. Use full-body movement, progressive catch play, and enough mound-ramp-up pitches for the arm, fastball, and delivery to feel ready.
Warm-up throws are not included in the workout score, but they still count toward the pitcher’s total throwing workload for the day.
Coaching Focus
- Call the batter side before every sequence.
- Keep all three pitches under one clear location plan.
- Judge each pitch by its role—not by strike result alone.
- Complete the sequence before discussing adjustments.
- Stop if fatigue changes arm speed, effort, or command.
Set Up Your Pitch Track Session
Choose Bullpen Session. Create two markers:
+
SEQ HIT
Apply to the third pitch when all three pitches remain usable for their intended roles.
+
SEQ MISS
Apply to the third pitch when one or more pitches make the sequence unusable.
Results
Score the Session
Count complete sequences graded Sequence Hit. A sequence succeeds only when all three pitches remain usable for their intended roles.
6–8 complete sequences
Great
The pitcher executed complete tunnels against both batter sides. Confirm which pattern created the strongest repeatability.
5 complete sequences
Competitive
Several sequences were usable, but one batter side or pattern broke down more often. Build from the stronger tunnel.
0–4 complete sequences
Keep Working
Too many sequences lost their plan before the third pitch. Simplify to one batter side and one pattern.
Sequence
- 1 RHH Sequence — FB Away → FB In → CH Below/Away Windup
- 1 RHH Sequence — FB Away → FB In → CH Below/Away Stretch
- 1 RHH Sequence — FB In → FB Away → CH Below/Away Windup
- 1 RHH Sequence — FB In → FB Away → CH Below/Away Stretch
- 1 LHH Sequence — FB Away → FB In → CH Below/Away Windup
- 1 LHH Sequence — FB Away → FB In → CH Below/Away Stretch
- 1 LHH Sequence — FB In → FB Away → CH Below/Away Windup
- 1 LHH Sequence — FB In → FB Away → CH Below/Away Stretch
Sequence Rules
- Batter Side: Define RHH or LHH before the first pitch.
- Away/In: Mirror the locations when the batter side changes.
- Below/Away: The changeup finishes beneath the away-side lane.
- Complete: All three pitches must remain usable for their intended roles.
Score the three-pitch sequence as a unit instead of collecting isolated hits. Stretch-only pitchers may complete every sequence from the stretch.
Development or preseason: 1–2 times per week with about 48 hours between structured mound sessions.
In season: 0–1 development bullpen per week. A game appearance or other meaningful mound session replaces it.
