Sport bound to feature in broadcast (11)
I believe the answer is:
showjumping
'sport' is the definition.
(showjumping is a kind of sport)
'bound to feature in broadcast' is the wordplay.
'bound' becomes 'jump' (I've seen this in another clue).
'to feature in' is an insertion indicator.
'broadcast' becomes 'showing' (I am not sure about this - if you are sure you should believe this answer much more).
'jump' placed into 'showing' is 'SHOWJUMPING'.
Can you help me to learn more?
(Other definitions for showjumping that I've seen before include "Equestrian event" , "Equestrian contest with fences etc" , "sports event" , "Riding competition" , "Equestrian sport" .)