Sport in loch with mist rising round (4)
I believe the answer is:
golf
'sport' is the definition.
(I know that Golf is a type of ball game)
'loch with mist rising round' is the wordplay.
'loch with' becomes 'l' (I can't justify this - if you can you should believe this answer much more).
'mist' becomes 'fog' (synonyms).
'rising' says the letters should be written in reverse (going up in a down clue).
'round' indicates putting letters inside.
'fog' back-to-front is 'gof'.
'l' going into 'gof' is 'GOLF'.
'in' is the link.
Can you help me to learn more?
(Other definitions for golf that I've seen before include "Leonhard -, Swiss mathematician/physicist" , "Rory McIlroy's game" , "Outdoor game" , "Sport; VW car" , "See 24" .)