Palumbo will be recalled from Double-A Frisco to start Game 1 of Saturday's doubleheader against the Athletics, T.R. Sullivan of MLB.com reports.
Saturday's spot start will mark Palumbo's big-league debut. The prospect has yet to pitch above Double-A Frisco, though he owns a solid 3.38 ERA, 1.28 WHIP and 65:24 K:BB in 50.2 innings with the RoughRiders this season. The southpaw is expected to return to the minors after the outing, though manager Chris Woodward noted that a strong performance could open the door for Palumbo to rejoin the rotation later in summer, per Levi Weaver of The Athletic.