King, for instance, using tennis area - an amusing person (5,4)
I believe the answer is:
court card
'king for instance' is the definition.
(I know that king is a type of court card)
'tennis area an amusing person' is the wordplay.
'tennis area' becomes 'court' (I've seen this before).
'an amusing person' becomes 'card' (I've seen this in another clue).
'court'+'card'='COURT-CARD'
'using' is the link.
(Other definitions for court card that I've seen before include "King, queen or knave, in pack" , "king, perhaps" , "King, queen or jack" , "Jack or a queen, for instance" , "King or queen, say" .)