Plucky lot with rival finish on court (4,3,3,5)

I believe the answer is:

game set and match

'finish on court' is the definition.
(tennis term)

'plucky lot with rival' is the wordplay.
'plucky' becomes 'game' (I've seen this before).
'lot' becomes 'set' ('set' can be a synonym of 'lot').
'with' becomes 'and' (I've seen this before**).
'rival' becomes 'match' ('match' can be a synonym of 'rival').
'game'+'set'+'and'+'match'='GAME SET AND MATCH'

(Another definition for game set and match that I've seen is " victory?".)

I've seen this clue in The Guardian.

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