Crossword Genius

Dull detail about champion's final exchange? (5,5)

Ross

I believe the answer is:

match point

'final exchange?' is the definition.
(tennis)

'dull detail about champion's' is the wordplay.
'dull' becomes 'mat' (mat as opposed to glossy).
'detail' becomes 'point' (synonyms).
'about' is a charade indicator (letters next to each other).
'champion' becomes 'ch' (I've seen this in other clues).
'point' after 'ch' is 'chpoint'.
'mat'+'chpoint'='MATCH POINT'

(Other definitions for match point that I've seen before include "could lead to victory in court" , "Decisive moment in game" , "One scored at bridge, perhaps" , "One serve away from victory" , "a single ace away from victory" .)

I've seen this clue in The Guardian.
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