The Cubs promoted Brown from Double-A Tennessee to Triple-A Iowa on Saturday.
Brown received the call to Triple-A after the Cubs summoned Caleb Kilian from Iowa to make a spot start this past weekend. Though Kilian has since been optioned back to Iowa, Brown looks like he'll keep a spot in the Triple-A rotation after he was unchallenged over his first four starts this season at Double-A. Over 20 innings with Tennessee, Brown compiled an 0.45 ERA, 0.95 WHIP and 30:6 K:BB.