Reveal players rejected (7)
I believe the answer is:
outcast
'rejected' is the definition.
(thesaurus)
'reveal players' is the wordplay.
'reveal' becomes 'out' (outing is a kind of revealing).
'players' becomes 'cast' (I've seen this before**).
'out'+'cast'='OUTCAST'
(Other definitions for outcast that I've seen before include "untouchable" , "Displaced person" , "Role of Ishmael" , "Rejected individual" , "A reject like 10 Across" .)