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PitchCom

PitchCom is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand PitchCom rather than just read about it. In short: PitchCom is a wireless communication system used in baseball that lets a player request pitches without using visible signals. Major League Baseball (MLB) approved the use of PitchCom before the start of the 2022 season with the intentions of deterring sign stealing and quickening the pace of play.

PitchCom — main illustration
PitchCom — illustration

Key takeaways

  • PitchCom belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect PitchCom to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of PitchCom from memory before moving on to harder problems.

Reference excerpt

PitchCom is a wireless communication system used in baseball that lets a player request pitches without using visible signals. Major League Baseball (MLB) approved the use of PitchCom before the start of the 2022 season with the intentions of deterring sign stealing and quickening the pace of play.

History Catchers traditionally request pitches with finger signs, but these can be stolen by a runner on second base and relayed to the batter. When a runner reaches second base, the catcher commonly visits the pitcher to change signs, delaying the game. The technology used in PitchCom was invented by John Hankins and Craig Filcetti to provide cues at magic shows. Their company asked MLB to consider adopting the technology in 2020. During the 2021 Low-A West season, teams were permitted to try PitchCom. The technology was optional but strongly encouraged, according to a memo sent by the league. After generally positive results in the minor league, and in spring training before the 2022 MLB season, the MLB Players Association approved use of PitchCom for the 2022 season. During spring training before the 2023 MLB season, MLB allowed pitchers to wear PitchCom wristbands so they could call their own pitches. As spring training ended, MLB allowed pitchers to request pitches on PitchCom during the 2023 regular season. MLB also clarified its rules, stating that in the event of a PitchCom malfunction, a pitcher or catcher must immediately notify an umpire, who would grant a timeout if the player is not attempting to circumvent pace of play rules. The KBO League began using PitchCom in July 2024.

Operation PitchCom has two functional components: a nine-button keypad that the catcher wears and small wireless receivers, with speakers, that the catcher, the pitcher, and up to three other fielders may wear inside their baseball caps. Each receiver can be programmed to a particular spoken language. When the catcher presses buttons to indicate the type of pitch and the desired location, all receivers speak the instructions in the selected language. All communications are encrypted, and teams may opt to replace pitch names such as "fastball" with code words. During its first season of use in MLB, some players had problems using PitchCom. Early in the 2022 season, New York Yankees pitcher Aroldis Chapman had difficulty hearing PitchCom over the crowd during an appearance at Oriole Park at Camden Yards. "We just might have to turn up our volume a little bit," said Jose Trevino, the Yankees' catcher. Gerrit Cole, another Yankees pitcher, had trouble hearing pitch instructions in his first two starts, including an incident where the instructions were drowned out by a siren sound effect that the Yankee Stadium audio crew plays to energize the crowd. During a game on June 30 against the Houston Astros, Yankees pitcher Luis Severino was trying to fix his malfunctioning PitchCom device when Kyle Tucker, on third base, tried to steal home. Severino, despite the distraction, threw out Tucker at home. On Opening Day, Milwaukee Brewers pitcher Corbin Burnes had problems hearing his PitchCom speaker over the crowd noise at American Family Field. During the 2022 season, in response to complaints, PitchCom was modified to have a higher volume limit and to have an extension tube that put sound closer to the player's ear. Even at the higher maximum volume, during the 2022 MLB postseason, Philadelphia Phillies shortstop Bryson Stott struggled to hear the audio over the crowd noise. During a spring training game before the 2023 season, umpires informed Minnesota Twins manager Rocco Baldelli that umpires and Tampa Bay Rays batters could clearly hear PitchCom signals because Twins catcher Tony Wolters had his speaker volume turned up to an excessively high level and because the announced crowd of 2,531 at Tropicana Field was quiet.

Reception Despite early problems, all 30 MLB clubs started to use PitchCom in some way during the 2022 season. Detroit Tigers catcher Tucker Barnhart said that the technology would make the Tigers ready for the pitch clock when MLB starts to use it. Cleveland Guardians manager Terry Francona and catcher Austin Hedges said that the system sped up games noticeably. Yankees manager Aaron Boone credited PitchCom with significantly shortening Yankees games in 2022. Through their first 54 games in 2022, the Yankees played 25 games (almost half) in less than three hours each. In 2021, only about one quarter of the Yankees' games finished in three hours or less. Across the majors, the average time of a nine-inning game in 2022 decreased by six minutes from the prior season, which ESPN credited in part to PitchCom. New York Mets pitcher Max Scherzer used PitchCom for the first time on July 27, 2022. He praised PitchCom's functionality, but he told reporters that "it should be illegal", saying that it removes incentives for pitchers to create complex visual sign systems that runners are challenged to decode. "It works," he said, "but it's taking away a part of the game." Scherzer's comments drew rebuttals from Seattle Mariners relief pitcher Paul Sewald, who called them "a little naïve" and "a bit hypocritical", and from Minnesota Twins starter Sonny Gray, who said that teams were able to break down sign sequences during a game.

Photos

References

External links Official website

Illustrations

PitchCom: Michael Wacha of the Kansas City Royals wearing a PitchCom keypad on his waist
Michael Wacha of the Kansas City Royals wearing a PitchCom keypad on his waist
PitchCom illustration
PitchCom illustration

Worked examples

Example 1 — a first encounter with PitchCom

Start with the simplest possible case. Write down what PitchCom claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to PitchCom before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about PitchCom ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of PitchCom

In research
PitchCom appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses PitchCom in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
PitchCom is common in secondary-school and first-year university syllabi. It links to neighbouring topics Baseball equipment, KBO League, Major League Baseball, so understanding it makes those chapters shorter.
In everyday life
Look for PitchCom outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study PitchCom in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what PitchCom means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain PitchCom out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PitchCom in simple terms?

PitchCom is a wireless communication system used in baseball that lets a player request pitches without using visible signals. Major League Baseball (MLB) approved the use of PitchCom before the start of the 2022 season with the intentions of deterring sign stealing and quickening the pace of play.

Why does PitchCom matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study PitchCom?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on PitchCom.

Tags

  • Baseball equipment
  • KBO League
  • Major League Baseball
  • Telecommunications equipment
  • Wireless communication systems

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