Leave everyone in eastern edge of playing area

I believe the answer is:

goalline

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'edge of playing area' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

'leave everyone in eastern' is the wordplay.
'leave' becomes 'go'.
'everyone' becomes 'all' (all people).
'eastern' becomes 'e'.
'go'+'all'+'in'+'e'='GOAL-LINE'

Can you help me to learn more?

I've seen this clue in The Daily Mail.

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