Stager

n.	1.	A player.
	2.	One who has long acted on the stage of life; a practitioner; a person of experience, or of skill derived from long experience.
	3.	A horse used in drawing a stage.

Noun	1.	stager - someone who supervises the physical aspects in the production of a show and who is in charge of the stage when the show is being performed Synonyms: stage manager
	2.	stager - an experienced person who has been through many battles; someone who has given long service Synonyms: old hand, old stager, old-timer, oldtimer, warhorse, veteran

expert, old hand, old stager, old-timer, oldtimer, veteran, warhorse