Given a role, still on the field (2,4)
I believe the answer is:
in play
'on the field' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
(Other definitions for in play that I've seen before include "(Of ball) available for use in game" , "(Of ball) able to be used in game" , "on the field" , "performing publicly?" , "Acting" .)