Keller allowed five hits and walked one while striking out nine over five scoreless innings in Friday's Cactus League win over the Giants.
Anne Rogers of MLB.com reports Keller will pitch during the Royals' first regular-season series against the Twins, so Friday was likely his last spring appearance. Keller posted a 4.95 ERA and 1.40 WHIP over 20 innings across six starts in Cactus League play. He's posted an ERA north of 5.00 over the last two seasons, but he'll get a chance in the rotation again after finishing out 2022 in the bullpen.