Ghost player? (5)
I believe the answer is:
dummy
I believe this is a double definition.
'ghost' is the first definition.
(thesaurus)
'player?' is the second definition.
(I know that dummy is a type of player)
(Other definitions for dummy that I've seen before include "exposed hand" , "Substitute for the real thing" , "Baby's comforter" , "hand seen in bridge" , "that all the players can see" .)