Secure roller that produces result in court (3-7)

I believe the answer is:

tie-breaker

'that produces result in court' is the definition.
(tie-break on a tennis court)

'secure roller' is the wordplay.
'secure' becomes 'tie' (tying is a kind of securing).
'roller' becomes 'breaker' (both can mean a wave).
'tie'+'breaker'='TIE-BREAKER'

I've seen this clue in The Guardian.

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