Teams in tunnel oddly showing little emotion (13)

I believe the answer is:

unsentimental

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'teams in tunnel oddly showing little emotion' is the definition.
I can't judge whether this definition defines the answer.

'teams in tunnel oddly' is the wordplay.
'oddly' is an anagram indicator (letters in an odd order).
'teams'+'in'+'tunnel'='teamsintunnel'
'teamsintunnel' is an anagram of 'UNSENTIMENTAL'.

Can you help me to learn more?

(Other definitions for unsentimental that I've seen before include "Hard-headed" , "hard-nosed" , "Not given to excessively tender emotions" , "Eschewing tender emotions" , "Tough-minded" .)

I've seen this clue in The Times.

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