参照
https://www.nytimes.com/athletic/5961016/2024/12/02/golden-at-bat-rule-mlb/
https://www.mlb.com/news/mlb-younger-fans-growing-youth-participation
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参照
https://www.nytimes.com/athletic/5961016/2024/12/02/golden-at-bat-rule-mlb/
https://www.mlb.com/news/mlb-younger-fans-growing-youth-participation