Marriage followed by a hefty do, off a TV show (5,2,3,3)

I believe the answer is:

match of the day

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'a tv show' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'marriage followed by a hefty do off' is the wordplay.
'marriage' becomes 'match' (I've seen this before).
'followed by' means one lot of letters go next to another.
'off' indicates an anagram.
'a'+'hefty'+'do'='aheftydo'
'aheftydo' with letters rearranged gives 'oftheday'.
'match'+'oftheday'='MATCH OF THE DAY'

Can you help me to learn more?

(Other definitions for match of the day that I've seen before include "BBC TV programme with plenty of kicks?" , "Football programme" , "Football show" .)

I've seen this clue in The Sunday Times and The Times.

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