noun which may take the genitive case particle 'no'
during a game; in the middle of a match
Used to describe events or states occurring while a sports match or game is in progress.
試合中に雨が降り出した。
It started raining during the match.
彼は試合中、ずっと集中していた。
He stayed focused throughout the game.
Compound of 試合 (shiai, 'match, game') and 中 (chū, 'during, in the middle of').