Nervousness with twirling racket briefly touching court divider (7)
I believe the answer is:
tension
'nervousness' is the definition.
(feeling tense)
'twirling racket briefly touching court divider' is the wordplay.
'twirling' is a reversal indicator.
'racket' becomes 'noise' (racket can mean a loud noise).
'briefly' means to remove the last letter.
'touching court divider' becomes 'net' (I am not sure about this - if you are sure you should believe this answer much more).
'noise' with its final letter removed is 'nois'.
'nois'+'net'='noisnet'
'noisnet' in reverse letter order is 'TENSION'.
'with' is the link.
Can you help me to learn more?
(Other definitions for tension that I've seen before include "Uneasiness" , "State of strain or suspense" , "Anxiety" , "Mental or emotional strain" , "anxious state" .)