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They watch as three points can go to Golf driver (9)

Ross

I believe the answer is:

sentinels

'they watch' is the definition.

'three points can go to golf driver' is the wordplay.
'three points' becomes 'sen'.
'can' becomes 'tin' ('tin' can be a synonym of 'can').
'go to' says to put letters next to each other.
'golf driver' becomes 'els' (golf player Ernie Els).
'sen'+'tin'+'els'='SENTINELS'

'as' is the link.

(Another definition for sentinels that I've seen is " Lookout men".)

I've seen this clue in The Guardian.
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