I'd say Robles and Stevenson get to start until the minor league season starts.
Soto can be back as soon as 4/30, I think. Hernandez goes down, most likely. After that, what do you do? Add Parra to the roster? Pick up an unsigned OF? There's not much OF depth. Robles needs to play every day somewhere. But yes, 5/4 isn't far from 1/4 of the season I was talking about.