America is after a record in Olympic event (6)
I believe the answer is:
discus
'olympic event' is the definition.
(I've seen this before)
'america is after a record' is the wordplay.
'america' becomes 'US' (United States).
'is after' is a charade indicator (letters next to each other).
'a record' becomes 'disc' (eg a CD, compact disc).
'us' put after 'disc' is 'DISCUS'.
'in' is the link.
(Other definitions for discus that I've seen before include "Circular projectile" , "sports event" , "Object thrown in field sports" , "Debate" , "Something thrown by athletes" .)