Man of the match (10)
I believe the answer is:
bridegroom
This clue is a double definition.
'man' is the first definition.
(I know that bridegroom is a type of man)
'the match' is the second definition.
(bridegroom is a kind of match)
'of' acts as a link.
(Other definitions for bridegroom that I've seen before include "Man on his wedding day" , "new partner" , "Union joiner" , "new joiner" .)