Evocative area in field sport (8)
I believe the answer is:
haunting
'evocative' is the definition.
(I've seen this before)
'area in field sport' is the wordplay.
'area' becomes 'a' (maths abbreviation).
'in' indicates putting letters inside.
'field sport' becomes 'hunting' (I've seen this before).
'a' placed within 'hunting' is 'HAUNTING'.
(Other definitions for haunting that I've seen before include "pursuit of ghosts" , "Poignant, evocative" , "A show of spirit" , "Ghost visitation on ninth Aug" , "Lingering in the mind, like ghost" .)