Abandons currently popular ball at court (4,4)
I believe the answer is:
drop shot
'ball at court' is the definition.
(tennis)
'abandons currently popular' is the wordplay.
'abandons' becomes 'drops' (I've seen this in another clue).
'currently popular' becomes 'hot' (hot can mean trendy or fashionable).
'drops'+'hot'='DROP-SHOT'
(Other definitions for drop shot that I've seen before include "strong highball? Hardly" , "One may land in court" , "Hit (in tennis, squash) awkward to return" , "Stroke" .)