Enter Hagen Smith and Tanner McDougal, Chicago's two best pitching prospects, who were called up in unison on Saturday afternoon. Smith is the better prospect and probably Chicago's best bet at a true late-season upgrade with postseason equity. It would require an aggressive approach from the Rays to get him to the majors this season, potentially skipping Triple-A altogether. OF Walker Jenkins, Minnesota TwinsWalker Jenkins - Minnesota Twins | USA TODAY Network via Reuters ConnectMinnesota recently called up 23-year-old shortstop Kaelen Culpepper, their No. 4 overall prospect — who's enjoying a productive Triple-A season, up to an .829 OPS.