Leaders of paralympics organise long opening sporting event (4)

I believe the answer is:

polo

'sporting event' is the definition.

'leaders of paralympics organise long opening' is the wordplay.
'leaders of' indicates taking the first letters.
The initial letters of 'paralympics organise long opening' is 'POLO'.

(Other definitions for polo that I've seen before include "jersey" , "Top" , "Hockey on horseback" , "Oriental visitor < ? Sucker having a hole" , "Horseback sport" .)

I've seen this clue in The Independent.

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