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Pitch clock

Pitch clock 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 Pitch clock rather than just read about it. In short: A pitch clock (also known as a pitch timer) is used in various baseball leagues to limit the amount of time a pitcher takes before throwing a pitch and/or limit the amount of time the hitter uses before they are set to hit. Various baseball leagues and tournaments around the world use a pitch clock to speed up the pace of play.

Pitch clock — main illustration
Pitch clock — illustration

Key takeaways

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

Reference excerpt

A pitch clock (also known as a pitch timer) is used in various baseball leagues to limit the amount of time a pitcher takes before throwing a pitch and/or limit the amount of time the hitter uses before they are set to hit. Various baseball leagues and tournaments around the world use a pitch clock to speed up the pace of play. Major League Baseball (MLB) began using a pitch clock in the 2023 season following a period of tests on MLB partner leagues, minor league baseball, and college baseball.

History In 1962, Hap Dumont, head of the semi-pro National Baseball Congress, commissioned the Timex Corporation to build a clock to install in the scoreboard at Lawrence Stadium in Wichita, Kansas for the NBC National Tournament, with a 20 second pitch clock and 90 seconds between innings. The clock buzzed when the timer went off, with a ball called if the pitcher violated and a strike if the batter violated the timer. In 1965, Dumont predicted Major League Baseball would use the NBC electronic timer in two years. The timer has been used for the NBC World Series in Wichita ever since. In professional baseball, Pacific Coast League President Dewey Soriano ordered PCL umpires to enforce the 20 second pitch timer listed in the rulebook in 1962. Two teams in the PCL, the Spokane Indians and Portland Beavers, installed pitch clocks in their stadiums to varying levels of success, with umpires not always calling balls after violations. In 1963, the Texas League implemented pitch clocks league wide, but were discontinued before the 1965 season. The Midwest League’s Quad City Angels saw the most success with their pitch clock, installing it in 1963 and using it at least through the 1969 season. In college baseball, the Southeastern Conference experimented with using pitch clocks in 2010. Pitchers were given twenty seconds to throw the pitch, or a ball would be added to the count. Similarly, a batter stepping out of the batter's box with less than five seconds on the clock was assessed an additional strike. After the 2010 season, the National Collegiate Athletic Association sought to make the pitch clock mandatory, and instituted it for the 2011 college baseball season, but only when there are no runners on base. The first professional league to use pitch clocks was the Arizona Fall League, starting in 2014. On January 15, 2015, Major League Baseball (MLB) announced it would institute a 20-second pitch clock in Minor League Baseball for Double-A and Triple-A teams during the 2015 season. Pitchers were allowed 20 seconds to throw a pitch, with the penalty of a ball awarded to the batter if not followed. Along with other rules affecting the pace of play, the clock contributed to a 12-minute reduction in game times between the 2014 and 2015 seasons, compared to the leagues that did not use the clock, which saw game times change from an increase of three minutes per game to a decrease in five minutes per game. Game times increased in 2016 and 2017, but were still faster than games in 2014. The independent Atlantic League began using a 12-second pitch clock.

Major League Baseball The 1901 season saw the implementation of a predecessor to the modern-day pitch clock. When no runners were on base, a one-ball penalty would be imposed if the pitcher did not deliver a pitch within 20 seconds of the batter taking his stance at the plate. The rules were tightened before the start of the 1955 season, and the 20-second timer started once the pitcher received the ball. However, these 20-second limits were hardly ever enforced, and were left to the umpire's judgement. MLB and the MLB Players Association (MLBPA) discussed the possibility of introducing the pitch clock in the major leagues for the 2018 season. MLB opted against imposing it unilaterally, over the opposition of the MLBPA. MLB implemented a 20-second pitch clock in spring training games in 2019. The collective bargaining agreement reached to end the 2021–22 Major League Baseball lockout included the possibility of introducing a pitch clock for the 2023 MLB season. Four active players plus six persons appointed by MLB and one umpire formed a Joint Competition Committee to review and recommend any changes to playing rules. On September 8, 2022, MLB announced that rules changes for 2023 included the use of a pitch clock. Pitchers would have 15 seconds between pitches when there are no baserunners and 20 seconds if there is at least one baserunner. Also, the batter will have 7 to 12 seconds to be in the stance ready to hit, or an automatic strike will be called. The clock starts when the pitcher gets the ball and the catcher and batter are ready.

… excerpt ends here. Continue reading the full article.

Illustrations

Pitch clock: A pitch clock displayed at Werner Park in 2015
A pitch clock displayed at Werner Park in 2015
Pitch clock: The outfield pitch clock at American Family Field is seen in the center of the image on the pillar in September 2022; here, it indicates that seven seconds remain in a television timeout between innings.
The outfield pitch clock at American Family Field is seen in the center of the image on the pillar in September 2022; here, it indicates that seven seconds remain in a television timeout between innings.
Pitch clock: The centerfield pitch clock at Chicago's Rate Field, which is installed to the bottom left of the Chicago White Sox's signature 'exploding scoreboard'. Its positioning places it in direct view of the batter, catcher, and home plate umpire and is required to be placed outside the batter's eye.
The centerfield pitch clock at Chicago's Rate Field, which is installed to the bottom left of the Chicago White Sox's signature 'exploding scoreboard'. Its positioning places it in direct view of the batter, catcher, and home plate umpire and is required to be placed outside the batter's eye.

Worked examples

Example 1 — a first encounter with Pitch clock

Start with the simplest possible case. Write down what Pitch clock 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 Pitch clock 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 Pitch clock 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 Pitch clock

In research
Pitch clock 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 Pitch clock 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
Pitch clock is common in secondary-school and first-year university syllabi. It links to neighbouring topics Baseball rules, Baseball terminology, Time measurement systems, so understanding it makes those chapters shorter.
In everyday life
Look for Pitch clock 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 Pitch clock in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Pitch clock 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 Pitch clock out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pitch clock in simple terms?

A pitch clock (also known as a pitch timer) is used in various baseball leagues to limit the amount of time a pitcher takes before throwing a pitch and/or limit the amount of time the hitter uses before they are set to hit. Various baseball leagues and tournaments around the world use a pitch clock…

Why does Pitch clock 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 Pitch clock?

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 Pitch clock.

Tags

  • Baseball rules
  • Baseball terminology
  • Time measurement systems
  • Timers

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