Horton allowed a run on three hits and one walk while striking out 10 in Monday's Cactus League game against the Guardians.
The right-hander surrendered six runs -- including three homers -- during his previous Cactus League outing last week, but he bounced back in dominant fashion Monday. Horton will be a pivotal rotation piece for the Cubs in 2026 after he posted a 2.67 ERA, 1.08 WHIP and 97:33 K:BB across 118 regular-season innings as a rookie last year.