noun
lucky seventh inning; seventh-inning stretch
Baseball term for the seventh inning, often associated with a rally or a stretch break. In Japanese baseball culture, fans may sing team songs or release balloons during this inning.
ラッキーセブンに逆転ホームランが出た。
A come-from-behind home run came in the lucky seventh inning.
ラッキーセブンで風船を飛
It's a tradition to release balloons during the lucky seventh inning.