https://www.mlb.com/news/mock-draft-for-first-round-of-2018-mlb-draft/c-279699234
19. Cardinals
Mayo: Jackson Kowar, RHP, Florida -- Some think Kowar has better raw stuff than his teammate, Singer, albeit with less polish. Kowar's top two pitches are his fastball and changeup, which could remind some in Cardinals Nation of Michael Wacha. Callis: Shane McClanahan, LHP, South Florida -- Unless one of the premier high school pitchers slide this far -- which isn't uncommon -- a college arm is the most likely pick.
20. Twins
Mayo: Shane McClanahan, LHP, South Florida -- The Twins are said to be mostly looking at college arms or high school bats, so they could opt for someone like Naylor or Schnell in this spot. But we'll stick with college pitching and McClanahan, who has slid a bit because of command issues, but still has a plus-plus fastball from the left side. Callis: Jackson Kowar, RHP, Florida -- Minnesota could grab the last college pitcher from the second tier before they're all gone. The Twins could be the lone team to make California shortstop Osiris Johnson a first-rounder, and Denaburg, Larnach and Naylor also are possibilities.