Recipient to tackle points (9)
I believe the answer is:
addressee
'recipient' is the definition.
(addressee is a kind of recipient)
'tackle points' is the wordplay.
'tackle' becomes 'address' (I can't explain this - if you can you should believe this answer much more).
'points' becomes 'ee' (an abbreviation for a compass point written twice).
'address'+'ee'='ADDRESSEE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for addressee that I've seen before include "One named on summons" , "The person to whom letter is delivered" , "Recipient of mail" , "Person named on an envelope" , "The one to whom the message is sent" .)