Heavily beaten in end court somehow (8)

I believe the answer is:

trounced

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'heavily beaten' is the definition.
'trounced' can be an answer for 'beaten' (thesaurus). I'm unsure of the 'heavily' bit.

'end court somehow' is the wordplay.
'somehow' indicates an anagram.
'end'+'court'='endcourt'
'endcourt' is an anagram of 'TROUNCED'.

'in' is the link.

Can you help me to learn more?

(Other definitions for trounced that I've seen before include "Beat hollow" , "Not cured after receiving heavy beating" , "Thrashed, beat heavily" , "Defeated decisively" .)

I've seen this clue in The Sun.

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