Possibly earn a place in the sporting world (5)
I believe the answer is:
arena
'place in the sporting world' is the definition.
'arena' can be an answer for 'place' (I have seen 'Place of contest' mean 'arena' so perhaps 'place' could also mean 'arena'). I'm not certain of the 'in the sporting world' bit.
'possibly earn a' is the wordplay.
'possibly' indicates an anagram.
'earn' with letters rearranged gives 'aren'.
'aren'+'a'='ARENA'
Can you help me to learn more?
(Other definitions for arena that I've seen before include "Scene of action" , "place for sporting contest" , "Venue for boxing, circus and other action events" , "Ring for contest" , "Action space in centre of amphitheatre" .)