Crossword Genius

Top team at a disadvantage, in total confusion (6-4)

Ross

I believe the answer is:

upside-down

I'm a little stuck... Click here to teach me more about this clue!

'a disadvantage in total confusion' is the definition.
I can't judge whether this defines the answer.

'top team at' is the wordplay.
'top' becomes 'upside' (I've seen this in another clue).
'team at' becomes 'down' (I can't justify this - if you can you should give a lot more credence to this answer).
'upside'+'down'='UPSIDE-DOWN'

Can you help me to learn more?

I've seen this clue in The Telegraph.
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