noun
forfeited game
Baseball term for a game decided by forfeit, typically due to a rule violation or failure to field a team.
雨天によるグラウンド不良で、試合は没収試合となった。
Due to poor field conditions from rain, the game was declared a forfeit.
放棄試合 is a more general term for an abandoned or defaulted game, while 没収試合 specifically refers to a forfeited game under baseball rules.
Compound of 没収 (forfeit, confiscation) and 試合 (match, game).