Losing team's stumbling-block (8)

I believe the answer is:

downside

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'stumbling-block' is the definition.
I know nothing about this answer so I can't tell whether this works.

'losing team's' is the wordplay.
'losing' becomes 'down' (similar in meaning).
'team' becomes 'side' (both can mean a sports team).
'down'+'side'='DOWNSIDE'

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(Other definitions for downside that I've seen before include "RC school; bad aspect" , "Negative aspect" , "disadvantage" , "Drawback" , "Discouraging aspect" .)

I've seen this clue in The Telegraph.

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