Brag about clutch (4)
I believe the answer is:
grab
'clutch' is the definition.
(I know that grab is a more specific form of clutch)
'brag about' is the wordplay.
'about' indicates anagramming the letters.
'brag' anagrammed gives 'GRAB'.
(Other definitions for grab that I've seen before include "Seize suddenly" , "Seize rudely" , "interest" , "Grasp roughly" , "Seize roughly" .)