U-18 World Cup Baseball Tournament(U-18 Baseball World Cup), formerly known asWorld Baseball Championship(World Junior Baseball Championship) is an international baseball competition hosted by the World Baseball and Softball Federation. Participants are limited to 16 to 18 years old. It has been held since 1981 and has been held every year. Since 2000, it has been held every two years. In 2021, it will be changed from the original nine-game system to a seven-game system.
1Due to the severe infectious pneumonia epidemic, the competition originally held in 2021 has been postponed to 2022, but the name remains unchanged.[2]。
