
The running clock rule, also known as the mercy rule, slaughter rule, knockout rule, or skunk rule, is a provision in basketball that is designed to prevent blowouts and spare losing teams from further humiliation. It requires the clock to continue running during the fourth quarter when one team leads by a significant margin, typically 35 or more points. This rule has been adopted by several high school basketball associations across the United States, including in New Jersey, Indiana, and Kentucky.
| Characteristics | Values |
|---|---|
| What is it? | The running clock rule, also known as the mercy rule, slaughter rule, knockout rule, or skunk rule, ends a two-competitor sports competition earlier than the scheduled endpoint if one competitor has a large and presumably insurmountable scoring lead over the other. |
| Why is it needed? | To prevent blowout games that can become a heated issue, especially when there is a wide gap in talent between the top and bottom teams. |
| When does it apply? | When one team leads by 35 or more points in the second half. |
| When does the clock stop? | Only for a charged time-out, an injury/blood or disqualification, and immediately following the reporting of a foul if free throws are to be administered. |
| Where is it used? | In several sports, including football, soccer, and basketball. In basketball, it is used in Indiana, Kentucky, and New Jersey. |
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What You'll Learn

The running clock rule is a mercy rule
In basketball, the running clock rule, or mercy rule, is invoked when one team leads by a certain number of points, often 35 or more, during the second half of the game. This rule stipulates that the game clock will continue to run, even during times when it would typically be stopped, such as an incomplete pass or when the differential falls below the threshold. The only exceptions are usually for free throws, timeouts, end of periods, injuries, or safety concerns.
The implementation of the running clock rule in high school basketball aims to reduce the number of blowout games, where one team significantly outperforms the other. It also lessens the chance for the leading team to score more and reduces the time the trailing team faces an insurmountable deficit. Additionally, it can relieve pressure from coaches, who no longer need to focus on the scoreboard, and can instead prioritize managing their players' playing time and well-being.
While the running clock rule is not mandatory in all states, many coaches and referees support its implementation. They recognize its necessity in preventing lopsided margins and protecting the well-being of the players, especially in cases where there is a wide gap in talent between teams. However, some coaches initially opposed the rule, believing that coaches should learn to control and manage the game better to prevent blowouts.
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It ends the game early if one team leads by 35+ points
In basketball, a running clock rule is a type of mercy rule, which ends a game early if one team leads by a large and presumably insurmountable number of points. This is to spare the losing team further humiliation. In high school basketball, this rule is often applied when one team leads by 35 or more points.
In high school basketball, the running clock rule is applied differently depending on the state and the league. For example, in Indiana, a 35-point mercy rule was approved by the Indiana High School Athletic Association. This rule states that a running clock will go into effect in any game where one team takes a lead of 35 points or more in the second half and will continue to the end of the game, regardless of the margin. The only clock stoppages allowed are for free throws, timeouts, end of periods, injuries, and any other situation where an official deems a safety issue.
Similarly, in Kentucky, the KHSAA Board of Control has approved a running clock provision for basketball at all levels of high school basketball. The rule requires a running clock to be used if a point differential of 35 points or more is reached after halftime. The clock will only be stopped for a charged timeout, an injury, or disqualification, and immediately following the reporting of a foul if free throws are to be administered.
The North Jersey Interscholastic Conference (NJIC) also introduced a running clock rule at the start of the 2016-17 season. This rule states that after three quarters, if a team is leading by 35 or more points, the clock shall run (except during timeouts) for the duration of the fourth quarter. The clock continues to run even if the differential falls below 35 points.
The running clock rule is intended to reduce the number of blowout games, where one team significantly outperforms the other. These types of games can be challenging to coach, as the winning team wants to avoid embarrassing the losing team by continuing to increase their lead. The rule also provides relief for teams with smaller rosters and helps to speed up the game.
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The clock runs through the fourth quarter
The running clock rule, also known as the mercy rule, is a regulation in high school basketball that is designed to prevent one-sided blowout games and spare further humiliation for the losing team. In a blowout game, one team has a significant lead over the other, making the outcome of the game a foregone conclusion. The running clock rule states that if one team is leading by 35 or more points after three quarters, the clock will continue to run through the fourth quarter, only stopping for timeouts, injuries, or fouls. This shortens the duration of the game and reduces the likelihood of the winning team scoring even more points and the losing team facing an insurmountable deficit.
The rule was implemented by the Indiana High School Athletic Association (IHSAA) and the Kentucky High School Athletic Association (KHSAA) in response to the growing number of blowout games in high school basketball. It is similar to rules in other sports, such as American football and baseball, where a mercy rule may be invoked to end a game early if one team has a large and presumably insurmountable lead.
The running clock rule in high school basketball is designed to strike a balance between maintaining competitive integrity and sportsmanship. By allowing the clock to run continuously in the fourth quarter of a blowout game, the game is brought to a quicker conclusion, reducing the potential for the winning team to embarrass the losing team further. It also relieves pressure from coaches, who no longer need to focus on the scoreboard and can instead use the remaining time to experiment with different strategies or give younger players more playing time.
The rule has received mixed reactions from coaches and officials. Some appreciate its necessity in preventing blowout games and sparing embarrassment for the losing team. Others believe that coaches should be responsible for managing the game and preventing blowouts without the need for a running clock rule. Ultimately, the rule's effectiveness may depend on the specific circumstances of each game and the discretion of those involved.
While the running clock rule is not mandatory in all states, it has gained support from various stakeholders, including referees, who find it challenging to officiate blowout games impartially. The rule's impact on reducing blowout games and promoting sportsmanship in high school basketball will likely be evaluated over time, with potential adjustments made to ensure fair and competitive gameplay.
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It's used in other sports, like football and soccer
The concept of a running clock is used in other sports, like football and soccer. In football, the clock doesn't run continuously and can be stopped for timeouts and between certain plays. At the end of a game, a team trying to score will attempt to run the clock out of bounds or run pass plays, which will stop the clock between plays. The other team will then try to "run out" the clock by running the ball or tackling their opponents in-bounds to keep the clock ticking.
In American football, a running clock is often used in blowout games to shorten the game. This can be done by shortening the quarters or using a running clock, but only if both head coaches agree. In some states, a continuous clock rule is used as a variant of the mercy rule, which ends a game early if one team has a large and presumably insurmountable lead. For example, in Iowa, if one team leads by 35 points at any time after the first quarter, the continuous clock rule is invoked.
In soccer, a running clock is not used in the traditional sense, as the game clock runs continuously. However, the concept of running out the clock is still applicable. Time-wasting in soccer involves extending stoppages when the ball is out of play and keeping possession as long as possible when it is in play. In U.S. high school soccer, most states use a mercy rule that ends the game if one team leads by 10 or more goals from halftime onward.
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It's optional for coaches and officials to enforce
The running clock rule, also known as the mercy rule, is a regulation in high school basketball that allows coaches and officials to speed up the game and reduce humiliation for the losing team when one team is significantly ahead. This rule is optional for coaches and officials to enforce and is not universally adopted.
In basketball, the running clock rule is typically applied when one team establishes a substantial lead, often specified as 35 or more points. This threshold may vary across different states and leagues. For example, Louisiana has a rule where the running clock is triggered when the margin reaches 42 points, while Iowa's rule comes into effect when a 35-point differential is achieved after the first quarter.
The decision to implement the running clock rule lies with the coaches and officials involved. They may choose to activate it at their discretion, particularly if the margin of victory remains lopsided or if there are external factors like threatening weather. In some cases, the losing team's coach may agree to shorten the length of a quarter in conjunction with the continuous clock rule.
The rule's optional nature allows for flexibility in different competitions. It empowers coaches and officials to make judgments based on the specific circumstances of each game. However, it is worth noting that some states or conferences may have additional regulations. For instance, in Connecticut high school football, a coach faced a one-game suspension if their team ever attained a 50-point lead.
The running clock rule is designed to balance competitiveness and sportsmanship. By giving coaches and officials the option to enforce it, the rule aims to strike a balance between allowing a trailing team to potentially mount a comeback while also preventing unnecessary embarrassment for the losing side. Ultimately, the decision to invoke the running clock rule rests with those closest to the action, ensuring that the spirit of the game is preserved.
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Frequently asked questions
The running clock rule, also known as the mercy rule, is a provision in high school basketball that requires a running clock when one team leads by a significant margin, often 35 or more points. This rule aims to prevent blowouts and spare further humiliation for the losing team.
The running clock rule helps to reduce the number of blowout games, where one team significantly outperforms the other. It also prevents unnecessary embarrassment for the losing team and encourages fair play.
The running clock rule is typically applied in the second half or the fourth quarter when one team establishes a substantial lead, such as 35 or more points. Once the threshold is reached, the clock runs continuously, stopping only for specific reasons like timeouts, injuries, or free throws.
Several states across the US have adopted the running clock rule in high school basketball, including Indiana, Kentucky, New Jersey, and Louisiana. The rule is also referred to as the mercy rule in some states and is designed to shorten game time and reduce lopsided scores.
The running clock rule benefits both the winning and losing teams. It alleviates pressure on coaches to manage large leads or minimize embarrassment. It also provides relief for teams with smaller rosters and helps maintain sportsmanship and fair competition among players.











































