Due to a nationwide heat wave, Korean professional baseball has suspended all games for five days from the 5th to the 9th. This is the second time the league has been suspended since the COVID-19 cluster infection incident. The KBO announced heat wave stage-by-stage operation rules, prioritizing the safety of players and spectators, but ultimately decided to cancel all games after spectators showed symptoms suspected of heat stroke during a game held in Incheon. This heat wave is not a temporary phenomenon but a trend, and the KBO is emphasizing the need for long-term countermeasures.