Last point won by the champions (6)
I believe the answer is:
finals
'won by the champions' is the definition.
I can't judge whether this defines the answer.
'last point' is the wordplay.
'last' becomes 'final' (synonyms).
'point' becomes 's' (S is an example).
'final'+'s'='FINALS'
Can you help me to learn more?
(Other definitions for finals that I've seen before include "Last exam at university" , "University exams" , "University examinations" , "The last exams" , "Qualifying exams" .)