"[step] up {one's} game" の定義と意味

What is the origin of the idiom "step up one's game" and when to use it?

The origin of the phrase is unclear, but it may have originated from sports, particularly basketball, where players are often told to "step up" their game in order to win. Another possible origin is from the game of chess, where a player who is not doing well may be advised to "step up" their strategy in order to win. The phrase became more widely used in the 1990s and has since become a common expression in business, sports, and other fields where performance is important. It is often used as a motivational tool to encourage people to strive for excellence and push themselves to be the best they can be.