Blue — he’d adore new sporting contest (6-6)

I believe the answer is:

double-header

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'sporting contest' is the definition.
'double header' can be an answer for 'contest' (thesaurus). I am unsure of the 'sporting' bit.

'blue he'd adore new' is the wordplay.
'new' indicates an anagram.
'blue'+'hed'+'adore'='bluehedadore'
'bluehedadore' anagrammed gives 'DOUBLE-HEADER'.

Can you help me to learn more?

(Another definition for double-header that I've seen is " powerful train".)

I've seen this clue in The Times.

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