Crossword Genius

Match official, footballer and staff (4,3)

Ross

I believe the answer is:

best man

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'match official' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'footballer and staff' is the wordplay.
'footballer' becomes 'best' (George Best).
'and' says to put letters next to each other.
'staff' becomes 'man' (as in staffing or manning a particular place).
'best'+'man'='BEST MAN'

Can you help me to learn more?

(Other definitions for best man that I've seen before include "The groom's right-hand supporter" , "Bridegroom's friend" , "Bridegroom's mate" , "Principal groomsman at a wedding" , "May he win!" .)

I've seen this clue in The Sun.
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