Miles Mikolas is out for a while with an issue that Derrick Goold has learned a lot about this week. He tells us about the PRP injection and why this injury, although associated, doesn't mean Tommy John surgery is in the future. Tommy John surgery can seem as common as an oil-change these days. Does Mikolas pitch in 2020 for the Cardinals or not? Who takes his place and then who trickles down in the bullpen? Derrick throws out a familiar name to take on the role since it might be a limited assignment. Listen here: