Snooker player is young wizard (6)
I believe the answer is:
potter
I believe this is a double definition.
'snooker player' is the first definition.
(pots balls)
'young wizard' is the second definition.
(Harry Potter)
'is' is the link.
(Other definitions for potter that I've seen before include "Move unhurriedly" , "Waste time" , "One who makes ceramic objects" , "Pootle" , "Producer of earthenware - move with little direction or energy" .)