Cubs Place Cade Horton on 15-Day IL Following 93.8 MPH Fastball to Bo Naylor

Cade Horton was placed on the 15-day IL Sunday after a forearm strain limited his second 2026 start to just two innings.

Cade Horton was placed on the 15-day injured list on Sunday after a right forearm strain forced him out of his second outing of the 2026 season during the second inning. The 24-year-old right-hander exited his start against Cleveland on Friday after throwing a 93.8 mph fastball to Bo Naylor, a velocity mark lower than his typical average. This Cade Horton injury prompted an immediate call to the dugout for medical assistance, leading to his replacement by right-hander Colin Rea. Horton enters the recovery process following a standout rookie campaign where he posted an 11-4 record and a 2.67 ERA.

Manager Craig Counsell announced the roster move prior to a traditional Easter Sunday doubleheader against the Guardians. To fill the vacancy, the Cubs recalled left-hander Riley Martin from Triple-A Iowa and added right-hander Ethan Roberts as the 27th man for the twin bill. Horton is scheduled to meet with team doctors in Chicago on Monday to undergo further testing on his throwing arm. The discomfort first surfaced two days prior to the IL placement when the pitcher felt a specific sensation while delivering a pitch.

Medical Evaluation and Pitching Analytics

Counsell noted that a comprehensive medical outlook will likely take several days as the organization gathers multiple opinions on the right-hander's condition. The initial symptoms began as tightness in the wrist before migrating into the forearm as the game progressed. Horton explained that his decision to exit the contest was a strategic choice to avoid exacerbating the issue. The drop in velocity during the sequence against Naylor served as the primary indicator that the pitcher was not physically right.

Riley Martin joins the major league roster after being selected by Chicago in the sixth round of the 2021 draft out of Quincy University. The 28-year-old southpaw earned his promotion following a productive season at Triple-A Iowa, where he went 6-2 with a 2.69 ERA. Martin’s professional journey includes 174 minor league appearances, during which he has compiled a 24-13 record and a 3.76 ERA. His transition from Division II college baseball to the big leagues marks a significant milestone for the organization's developmental system.

Roster Adjustments for Cleveland Doubleheader

The addition of Ethan Roberts provides the Cubs with necessary bullpen depth for the two-game set in Cleveland. This roster churn occurs as the team seeks to maintain stability in the starting rotation while their former top rookie prospect undergoes evaluation. Martin has demonstrated consistent improvement throughout his tenure in the minors, a trait Counsell highlighted as the factor that put him on the radar for a major league call-up. The left-hander will be looking to make his first official appearance for the Chicago club during this road series.

Horton’s absence leaves a void in a rotation that relied on his efficiency last year. The pitcher’s cautious approach aims to protect his long-term health, as he expressed a desire to be smart about the injury rather than risking further damage. The team will rely on the medical staff in Chicago to determine the severity of the strain and establish a timeline for his return to the mound. Until then, the combination of Rea, Martin, and Roberts will be tasked with covering the innings vacated by the young starter.

Organizational Depth and Pitcher Performance

Riley Martin’s rise through the farm system reflects a steady upward trajectory in performance metrics. His 2.69 ERA at the Triple-A level last season served as the catalyst for his inclusion in the 2026 pitching plans. The Cubs' decision to utilize the 15-day IL provides a window for the forearm inflammation to subside while they await official test results. The Easter Sunday doubleheader serves as the immediate test for the restructured pitching staff without their 11-game winner from the previous season.

As Horton returns to Chicago, the focus shifts to the diagnostic imaging and the physical exams scheduled for Monday. The 24-year-old’s ability to recognize the drop in his fastball speed and the subsequent forearm tightness may have prevented a more serious structural issue. The Cubs remain patient, with Counsell emphasizing that the full scope of the injury will only be clear once all medical experts have weighed in later this week. The team continues its series in Cleveland with a modified bullpen and a reliance on their recent call-ups from Iowa.