Self-destruction of team, reportedly, after losing final set in match (7)
I believe the answer is:
suicide
'self-destruction' is the definition.
(synonyms)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for suicide that I've seen before include "Felo de se" , "Self-destruction" , "Act of killing oneself" , "Self-killing" .)