CHICAGO — The Cubs have called up their top pitching prospect, righty Caleb Kilian, to start Game 2 of their doubleheader against the St. Louis Cardinals on Saturday evening.
Kilian, 25, will make his major league debut after being acquired from the San Francisco Giants last July in exchange for former MVP Kris Bryant.
Kilian is 2-0 with a 2.06 ERA in nine starts for Triple-A Iowa this season. He had 41 strikeouts in 39⅓ innings before being…