noun
withdrawal from a tournament in progress
Sumo term: a wrestler leaves an ongoing tournament, typically due to injury. The decision is often made after a loss or when continuing is impossible.
横綱は怪我のため途中休場を余儀なくされた。
The yokozuna was forced to withdraw from the tournament in progress due to injury.
途中休場が決まった力士は、次の場所での復帰を目指す。
The wrestler who decided to withdraw mid-tournament aims to return in the next tournament.
休場 means absence from a tournament (often before it starts), while 途中休場 specifically means withdrawing after the tournament has begun.
Compound of 途中 (midway) and 休場 (absence from a tournament). The term is specific to sumo.