Pitts is going to have Tommy John surgery so he is done for the year. All I have heard about King is that he will NOT pitch this weekend.
That leaves us with probable starters of Grimes, Heddinger, and Stanton....those are all my personal guesses, I have not seen anything official on that. Isaacs will be the closer and all those "other guys" will pitch the innings in between. (NB-those "other guys" are getting some great experience under they collective belts, and after getting past their jitters they have been pitching awfully well!)