I can't figure out why somebody like Chris Sale would be in zero out of 100 lineups. Am I missing something?
The optimizer is going to give you the best projected lineup based on your settings. That could cause a player like Sale not to show up especially at his salary.
His salary based on his projection is likely the cause. Bump up his projection and you will likely end up with him in your lineups.
If that is not working I would just lock him in for a set number of lineups. If you are trying to stack expensive hitters Sale wouldn't show up. If you also email support with your settings I could see what else maybe cause but 99% sure it's his salary and not enough high projected cheap hitters.