Two playing partners love to get through (3,2)
I believe the answer is:
due to
'through' is the definition.
(thesaurus)
'two playing partners love' is the wordplay.
I cannot quite understand how this works, but
'two' could be 'duet' (duet is a kind of two) and 'duet' is present in the answer.
'love' could be 'o' (love means zero in tennis) and 'o' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'to get' is the link.
Can you help me to learn more?
(Another definition for due to that I've seen is " Caused by".)