Hors de combat
Definition 1 of 1
Pro Tip 1/3Combat Origin
Understand that it originates from warfare, implying being out of action due to injury or damage. 
The soldiers were hors de combat after the intense battle.
Pro Tip 2/3Beyond Sports
While often sports-related, it's also used to describe any situation where someone is unable to participate. 
After the long day, I was practically hors de combat for the evening party.
Pro Tip 3/3Emotional Use
It can describe emotional or mental incapacity, not just physical. 
Grief left her hors de combat, unable to focus on work.