A more thorough explanation:

The mercy rule is a principle in sports that allows for a game to end early if one team is winning by a large margin. This is done to prevent the losing team from being further humiliated and to save time.

For example, in Little League baseball, if one team is winning by 10 or more runs after four innings, the game will end early under the mercy rule.

In criminal law, the mercy rule refers to the defendant's right to offer character evidence as a defense. This type of evidence is often presented by the defendant's friends and family to show that they are a good person and would not have committed the crime they are accused of.

For instance, if someone is accused of theft, their family members may testify that they have never seen the defendant steal anything before and that they are known for their honesty and integrity.

These examples illustrate the mercy rule in both sports and criminal law. In sports, it is used to prevent further embarrassment for the losing team, while in criminal law, it is used to provide a defense for the accused by presenting evidence of their good character.