Broadcasts the races (6)
I believe the answer is:
relays
I believe this clue is a double definition.
'broadcasts' is the first definition.
(I've seen this before)
'races' is the second definition.
(relay races)
'the' acts as a link.
(Other definitions for relays that I've seen before include "Races where a baton is passed from one to another" , "Races for teams of four" , "Broadcasts" , "teams of relief workers" , "Transmits" .)