Cubs right-hander Cade Horton will undergo elbow surgery and miss the remainder of the 2026 season, manager Craig Counsell tells Sahadev Sharma of The Athletic. Per Meghan Montemurro of the Chicago Tribune, Horton has a torn ulnar collateral ligament. Whether he requires full Tommy John surgery or some sort of alternative won’t be known until the procedure is taking place. He is already on the 15-day injured list and will be transferred to the 60-day IL whenever the Cubs need to open a 40-man roster spot.
It’s a painful but unsurprising development for Horton. He started for the Cubs on Friday but threw a pitch that was about two miles per hour below his average. He summoned the trainer and was removed from the game, with the Cubs announcing his ailment as forearm discomfort. He was quickly placed on the IL and is now destined to stay there.
Horton entered the 2025 season as one of the top pitching prospects in the league. He delivered on that hype by giving the Cubs 118 innings with a 2.67 earned run average. He had big breakout potential here in 2026 but it will instead go down as a mostly lost season. The eventual details of his surgery will determine his path back to the mound. A full TJS usually has a timeline of 14 months or more, whereas an alternative such as the internal brace variety could allow a pitcher to return slightly quicker.
The young righty wasn’t called up until mid-May last year but pitched well enough to finish second in National League Rookie of the Year voting. As part of the Prospect Promotion Incentive, that gave him a full year of service time retroactively. He’ll continue to collect service time while on the IL this year and will get to the two-year mark. Along the way, he will turn 25 years old in August.
For the Cubs, they will have to proceed without Horton in their rotation plans for this year. They also lost Matthew Boyd to the IL in recent days, though his bicep strain seems fairly minor. From their season-opening rotation, they are down to the trio of Edward Cabrera, Jameson Taillon and Shota Imanaga. They began the campaign with Javier Assad optioned to the minors but he has quickly been recalled and will start today’s game. It seems likely that swingman Colin Rea will start tomorrow, though the Cubs haven’t made that official.
As mentioned, Boyd’s situation isn’t considered serious, so he could be back in a couple of weeks. There’s also Justin Steele, who is working his way back from his UCL surgery, which was performed around this time last year. He is on the 60-day IL and won’t be eligible for a return until late May.
In the short term, their depth is a bit questionable. Jaxon Wiggins is one the top pitching prospects in the league and he is pitching at Triple-A but he still needs to rein in his command. He walked 11.5% of batters faced last year and is up to 13.9% so far in 2026. Kyle Wright and Vince Velasquez are non-roster guys with big league experience but neither has been in the majors since 2023 and Wright is currently on the minor league IL.
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