expression, godan verb (-ru)
win one's first battle; win one's debut match
Used for a first victory in a competition, debut match, or initial challenge. Often carries a celebratory tone.
新人選手が初陣を飾り、チームに勢いをもたらした。
The rookie player won his debut match and brought momentum to the team.
彼はプロデビュー戦で初
He won his first professional bout.