Content to resign if Russia's back in Olympic sport (7)

I believe the answer is:

surfing

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

'olympic sport' is the definition.
'surfing' can be an answer for 'sport' (surfing is a kind of sport). I am unsure of the 'olympic' bit.

'content to resign if russia's back' is the wordplay.
'content to' says the answer is hidden in the clue.
'back' is a reversal indicator.
'gnifrus' is hidden in the letters of 'resign if russias'.
'gnifrus' reversed gives 'SURFING'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for surfing that I've seen before include "Browsing the Internet" , "Riding waves" , "sport" .)

I've seen this clue in The Telegraph.

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