Sporting venue, live, hosting international before end of game (7)
I believe the answer is:
aintree
'sporting venue' is the definition.
(English racecourse)
'live hosting international before end of game' is the wordplay.
'live' becomes 'are' (both can mean exist).
'hosting' means one lot of letters goes inside another.
'international' becomes 'int'.
'before end of game' becomes 'e' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'are' enclosing 'int' is 'aintre'.
'aintre'+'e'='AINTREE'
(Other definitions for aintree that I've seen before include "Here they run" , "place for horse racing" , "Trainee in Grand National venue" , "Liverpool racecourse" , "Grand National course" .)