What is a perfect game in baseball?

In baseball, a perfect game is a rare feat achieved by a pitcher who retires all 27 batters faced in a nine-inning game, without allowing any hits, walks, or errors by the defensive team.

To pitch a perfect game, the pitcher must be virtually flawless, with no hits or walks allowed and no errors committed by the defensive team behind him. It is considered one of the most difficult accomplishments in all of sports, and only 23 perfect games have been recorded in Major League Baseball history, with the most recent being thrown by Felix Hernandez of the Seattle Mariners on August 15, 2012.

The perfect game is often considered the pinnacle of pitching excellence, and pitchers who achieve this feat are celebrated as heroes and legends in the baseball world. While perfect games are rare, they are a testament to the skill, dedication, and hard work of the pitcher and the entire team behind him.