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I'm not telling lies: players made blunders (2,4,3,6)

Ross

I believe the answer is:

my lips are sealed

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'i'm not telling' is the definition.
I can't tell whether this defines the answer.

'lies players made blunders' is the wordplay.
'blunders' indicates anagramming the letters.
'lies'+'players'+'made'='liesplayersmade'
'liesplayersmade' with letters rearranged gives 'MY LIPS ARE SEALED'.

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(Other definitions for my lips are sealed that I've seen before include "I can't say" , "I won't say a word" , "I'll keep mum" .)

I've seen this clue in The Telegraph.
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