Stress from tight match (9)
I believe the answer is:
highlight
'stress' is the definition.
(I know that highlight is a more specific form of stress)
'tight match' is the wordplay.
'tight' becomes 'high' (I can't explain this - if you can you should believe this answer much more).
'match' becomes 'light' (light can mean a flame or match).
'high'+'light'='HIGHLIGHT'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for highlight that I've seen before include "Most memorable part of event" , "Outstanding feature" , "Emphasise" , "Underline or italicise, perhaps" , "Call attention to" .)