Ah, polo players are making a terrible fuss (6)
I believe the answer is:
hoopla
'fuss' is the definition.
(I've seen this before)
'ah polo players' is the wordplay.
'players' is an anagram indicator (I've seen 'player' mean this).
'ah'+'polo'='ahpolo'
'ahpolo' is an anagram of 'HOOPLA'.
'are making a terrible' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for hoopla that I've seen before include "Throwing event at a fair" , "Game in which rings are thrown over objects in order to win them" , "game in which all-round achievement is rewarded" , "needless commotion" , "Fairground throwing game" .)