A pig securing very old record? It’s better than average (5,3)
I believe the answer is:
above par
'better than average' is the definition.
(I've seen this before)
'a pig securing very old record?' is the wordplay.
'pig' becomes 'boar' (male pig).
'securing' is an insertion indicator.
'very' becomes 'v' (common abbreviation).
'old record?' becomes 'EP' (abbreviation for extended play record).
'a'+'boar'='aboar'
'v'+'ep'='vep'
'aboar' going around 'vep' is 'ABOVE PAR'.
'it's' is the link.
(Other definitions for above par that I've seen before include "at a premium" , "better than expected" , "Higher than average - bad in golf" , "Brave OAP may be better than average" , "Better than the norm" .)