noun
start of a match; kickoff; beginning of a game
Used in sports and competitive contexts to refer to the moment a match or game begins. Often seen in announcements, schedules, and commentary.
試合開始のホイッスルが鳴った。
The whistle for the start of the match sounded.
試合開始は午後3時です。
The game begins at 3 p.m.
Compound of 試合 (match, game) and 開始 (start, commencement).