Proper athletics event (4)
I believe the answer is:
meet
This clue could be a double definition.
'proper' is the first definition.
(thesaurus)
'athletics event' is the second definition.
'meet' can be an answer for 'event' (meet is a kind of event). I'm not certain of the 'athletics' bit.
Can you help me to learn more?
(Other definitions for meet that I've seen before include "Proper; touch" , "Come together or run into" , "Come upon" , "Confront" , "Appropriate" .)