All Blacks maybe blocking bad guy before each player’s chance to shine (7)
I believe the answer is:
cadenza
'all blacks maybe' is the definition.
I can't judge whether this defines the answer.
'blocking bad guy before each player's chance to shine' is the wordplay.
'blocking' means one lot of letters goes inside another (to block can mean to plug a gap in something).
'bad guy' becomes 'cad' (I've seen this in another clue).
'before' is a charade indicator (letters next to each other).
'each' becomes 'ea' (abbreviation).
'player's chance to shine' becomes 'nz' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'cad'+'ea'='cadea'
'cadea' placed around 'nz' is 'CADENZA'.
Can you help me to learn more?
(Other definitions for cadenza that I've seen before include "One's passage" , "Virtuoso passage by solo performer" , "Soloist's virtuoso passage" , "Virtuoso passage for soloist in a concerto" , "Virtuoso performance" .)