noun
loss of a low-ranked wrestler in the extra eighth bout
Sumo term: when a low-ranked wrestler (usually makushita or below) loses in the additional eighth bout held on the final day of a tournament. This bout is arranged to give a winning record to a wrestler who would otherwise end with a losing record.
幕下の力士が負け得で勝ち越しを逃した。
The makushita wrestler missed a winning record due to a loss in the extra eighth bout.