Folty was our best starter down the stretch. Long-term I prefer Soroka, but based on form the last few months it makes sense to line it up so Folty can take the mound in game 5. If Soroka had started game 1, I don't think he would have been brought back on short rest to start game 4 given signs he was wearning down at the end of the season. I also think he benefited from the extra days rest he got by being assigned game 3.