Support on stage (3)
I believe the answer is:
leg
This clue is a triple definition!
'support' is the first definition.
(leg is a kind of support)
'on' is the second definition.
(cricket term, fielding positions)
'stage' is the third definition.
('leg' can be a synonym of 'stage')
(Other definitions for leg that I've seen before include "Gigot" , "Member" , "Limb; stage" , "Projecting support for chair or table" , "Stage (of race)" .)