Willing tip to bring sporting advantage (4,5)
I believe the answer is:
game point
'sporting advantage' is the definition.
The definition suggests a singular noun which matches the answer.
'willing tip' is the wordplay.
'willing' becomes 'game' (game can mean willing to do something).
'tip' becomes 'point' (both can mean the end of something).
'game'+'point'='GAME POINT'
'to bring' is the link.
Can you help me to learn more?
(Other definitions for game point that I've seen before include "advantage possibly" , "Decisive moment" .)