Sucker punch clinches essentially humdrum victory (8)

I believe the answer is:
hoodwink
'sucker punch clinches essentially humdrum victory' is the definition.
I can't judge whether this defines the answer.
'punch clinches essentially humdrum victory' is the wordplay.
'punch' becomes 'hook' (type of punch in boxing).
'clinches' is an insertion indicator (inserted letters are embraced or clinched).
'essentially' says to take the centre.
'victory' becomes 'win' (a win is a victory).
The centre of 'humdrum' is 'd'.
'd'+'win'='dwin'
'hook' going around 'dwin' is 'HOODWINK'.
Can you help me to learn more?
(Other definitions for hoodwink that I've seen before include "Put wool over eyes of" , "Mislead" , "Deceive - cheat" , "Delude" , "Deceive, fool" .)
