Biagini's cutter and changeup have both been really effective this season. They may be able to simply rework his pitch mix to get good value out of him. I think Sanchez will need more work but his curve ball has been very effective and he has solid velocity and spin on his fastball.
Looking at statcast, it appears that Biagini's cutter has perhaps the highest SwStr% of any cutter in baseball, and he throws the majority of his cutters for strikes. Have him throw that pitch 60% of the time and see what happens.