draw due to injury (sumo)
Sumo term: a match declared a draw because both wrestlers are injured and cannot continue.
Both wrestlers were injured, and the bout was declared a draw due to injury.
ending in mutual damage; both sides lose
Figurative extension: a dispute or competition that ends with both parties suffering harm, with no clear winner.
The price war ended with both sides suffering damage.
The debate ended in mutual damage, with neither side satisfied.