Complimentary stop using opportunity to score (4,4)
I believe the answer is:
free kick
'opportunity to score' is the definition.
I can't tell whether this definition defines the answer.
'complimentary stop' is the wordplay.
'complimentary' becomes 'free' ('free' can be a synonym of 'complimentary').
'stop' becomes 'kick' (I've seen this before**).
'free'+'kick'='FREE KICK'
'using' acts as a link.
Can you help me to learn more?
(Other definitions for free kick that I've seen before include "Award for foul" , "'It's given for a foul (4,4)'" , "It's allowed for a foul" , "Feature in football" , "What's cheaper than a cheap thrill" .)