"conceivable...in the next few weeks."
Translating from Davey-speak: Sure, if we clinch with 10 days to go in the year and I need somebody to start a game so I can get my playoff rotation lined up, I could put him out there. Otherwise, that guy's not getting near a mound.
Lots of things are conceivable. It's conceivable the Nats could win every game from now till the time they win the WS. Not likely, though.