Cubs' top pitching prospect Caleb Kilian, part of Kris Bryant trade, to make MLB debut Saturday vs. Cardinals | CBS Sports Headlines Cubs' top pitching prospect Caleb Kilian, part of Kris Bryant trade, to make MLB debut Saturday vs. Cardinals Kilian has been dominant throughout his professional career ESN FeedsThis … Continue reading Cubs' top pitching prospect Caleb Kilian, part of Kris Bryant trade, to make MLB debut Saturday vs. Cardinals