Seam — Rule-Compliant at Every Level

Rule Compliance

Legal at every
level of the game.

Seam operates as a one-way electronic communication device — the exact technology class approved by every major governing body in baseball from Little League through the NCAA. No rule changes needed. No exceptions required.

ℹ️ Seam is rule-compliant — not officially "certified" by any organization. Always confirm with your local tournament director.

College

NCAA

National Collegiate Athletic Association

✓ Compliant

Rule 5-2-f (2025)

"The use of exclusively one-way electronic communication devices that transmit pre-recorded message(s) or signals for the purpose of relaying the pitch or play call from the dugout to the field is permitted."

One-way only: dugout coach → catcher ✅
Expanded in 2025 to include on-field coaches
No two-way or audio-response permitted
Seam is iPhone → Apple Watch (one-way) ✅

APPROVED SINCE 2021 · EXPANDED 2025

High School

NFHS / UIL

National Federation of State High School Associations · University Interscholastic League

✓ Compliant

Rule 1-6-2 / 3-2-5 (Eff. 2024)

"A coach may use a one-way electronic communication device to communicate to the catcher for the purpose of calling pitches. Coach cannot be outside the dugout/bench area."

One device per team; coach must stay in dugout
Catcher-only — no other players receive signal
Smartwatch explicitly listed as permitted device type
UIL follows NFHS baseball rules statewide

APPROVED 2024 · ALL 50 STATE FEDERATIONS

Travel / Youth Elite

Perfect Game

Perfect Game Baseball Association (PGBA)

✓ Compliant

PG Electronic Communication Policy

"Adoption of NCAA PitchCom Protocols — The use of exclusively one-way electronic communication devices that transmit pre-recorded message(s) or signals for the purpose of relaying the pitch or play call from the dugout to the field is permitted."

Explicitly adopts NCAA PitchCom-class protocols
One-way dugout-to-catcher transmissions permitted
In-ear with direct live audio restricted to catcher only
NFHS rules apply in all other cases

ADOPTED NCAA PROTOCOLS · ALL PG EVENTS

Youth Travel

USSSA

United States Specialty Sports Association

✓ Compliant

NFHS Rules (Adopted)

"Various technologies, earpiece, electronic band or a smartwatch could be used giving teams several options at varying costs. No other player would be able to wear or use this device."

USSSA events operate under NFHS baseball rules
Apple Watch explicitly compatible with rule language
Coach remains in dugout during communication
Seam Apple Watch display is receive-only ✅

NFHS RULES ADOPTED · EFFECTIVE 2024

Professional

MLB

Major League Baseball

Inspired By

PitchCom Era (2022–Present)

MLB introduced wrist-based electronic pitch calling in 2022. Every Men's College World Series Champion since adoption has used electronic pitch communication. The technology is now standard at every level of the sport.

MLB PitchCom set the standard Seam is built on
Game times dropped ~24 min after adoption
100% of MLB teams now use electronic signals
Sign-stealing incidents: zero since 2022

MLB STANDARD SINCE 2022

Youth

Youth Orgs

Little League, USSSA Youth, AAU, Local Rec Leagues

Check Locally

Verify With Tournament Director

Many youth organizations follow NFHS rules by default, where Seam is compliant. Individual leagues may have additional local restrictions. Always confirm with your tournament director before first use.

Over 4,000 youth programs used pitch-calling tech in 2024
60% of early adopters chose smartwatch-based systems
NFHS-aligned orgs: compliant by default
Always confirm with your specific league first

GROWING RAPIDLY · VERIFY LOCALLY

Why Seam Qualifies

Seam meets every requirement across all organizations

✓ One-way only

✓ Coach stays in dugout

✓ Catcher receives only

✓ No live audio response

✓ No internet required

✓ Pre-defined pitch calls

🚫

What rules prohibit

Two-way communication devices. Live audio back to the dugout. Coaches communicating from outside the dugout (at high school level). Any device used by players other than the catcher. Tablets, phones, or laptops during live play.

✅

What Seam does

iPhone in the dugout sends a pre-selected pitch call. Apple Watch on the catcher's wrist displays it. One direction only. No response mechanism. No live audio. Coach stays in the dugout. Exactly what the rules were designed to allow.

¹ NCAA Rule 5-2-f (2023–24 Interpretations, updated August 2024). ² NFHS 2024 Baseball Rules Changes, Rules 1-6-2 and 3-2-5, approved June 2023 effective 2024 season. ³ Perfect Game tournament rules page, "Electronic Communication Devices: Adoption of NCAA PitchCom Protocols." ⁴ USSSA Baseball National By-Laws & Rules (August 2025 edition), referencing NFHS 2024 changes. Seam is not officially endorsed, certified, or affiliated with any governing body listed. Rule compliance is the responsibility of the user and subject to local league interpretation. When in doubt, show your tournament director this page — or contact us and we'll help you confirm.

Legal at everylevel of the game.

Legal at every
level of the game.