The Cubs recalled Kilian from Triple-A Iowa on Monday, Maddie Lee of the Chicago Sun-Times reports.
Right-hander Nate Pearson is serving as the Cubs' opening pitcher for Monday's game in Philadelphia, but he's likely to cover only an inning or two before turning the contest over to the bullpen. Kilian will be available out of the bullpen and may end up taking on a bulk-relief role for the Cubs, as his final start with Iowa came six days earlier. Kilian made three appearances (one start) for the Cubs in 2023 but has pitched exclusively in the minors in 2024, turning in a 3.22 ERA, 1.15 WHIP and 38:14 K:BB over 44.2 innings with Iowa.