Sports enthusiast (3)
I believe the answer is:
fan
'sports enthusiast' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for fan that I've seen before include "Enthusiastic admirer as of pop star" , "Cooler; enthusiast" , "Manually wielded cooling device" , "Devoted admirer or air cooler" , "Cooling device or disciple of performer" .)