Written by Rhea Alison, Sports reporter, covering international sports since 2020

The Chicago Cubs have suffered a major early-season setback after rising star Cade Horton was ruled out for the remainder of the 2026 MLB season due to a serious elbow injury. The 24-year-old right-hander will undergo surgery after damaging the ulnar collateral ligament in his throwing arm, a blow confirmed by manager Craig Counsell on Tuesday. The issue first raised alarm during his April 3 outing against the Cleveland Guardians, just days after an impressive Opening Week start versus the Washington Nationals. For a Cubs team already dealing with injuries, this development could shape their entire campaign.

Horton’s electric start showed his promise

Horton entered the 2026 season carrying momentum from a standout rookie year, and he wasted no time reminding fans of his ability. In his first start against Washington, he looked composed and confident, mixing pitches well and keeping hitters off balance. He allowed only two runs across 6.1 innings, and there was a noticeable buzz in the crowd every time he stepped on the mound.

His fastball had life, his command looked tight, and he appeared ready to take another leap. That outing felt like a continuation of what made him one of the most exciting young arms in baseball last season.

Sudden injury shift against Cleveland

That optimism quickly faded in his next appearance. Facing Cleveland, Horton’s velocity dipped noticeably in the second inning. Observers could see him flexing his arm between pitches, and concern spread through the dugout. Moments later, he called for the trainer and walked off the mound, a moment that silenced the stadium.

Initially labeled as a forearm strain, further tests revealed more serious ligament damage. Now, surgery will end his season before it truly began.

A pattern of injury setbacks

This is not the first time Horton has faced physical challenges. Back in college, he underwent Tommy John surgery, a major procedure for pitchers. Since then, he has dealt with shoulder issues and even missed time last season with a rib injury.

Despite these setbacks, his talent has always stood out. In 2025, Horton posted a 2.67 ERA over 118 innings and delivered one of the most impressive stretches in the league, throwing 29 consecutive scoreless innings. That run turned heads across MLB and placed him firmly in Rookie of the Year conversations.

Cubs rotation now under serious pressure

The Cubs’ pitching depth is now being tested early. Matthew Boyd, the team’s Opening Day starter, is already on the injured list with a biceps issue. Meanwhile, Justin Steele continues his recovery from elbow surgery and is not yet fully available.

Without Horton, the team must lean on Javier Assad and Colin Rea to fill the gap. While both are capable, they lack Horton’s upside and ability to dominate games.

There is also the mental side of the loss. Horton brought energy to the rotation, and his presence often lifted the team’s confidence. Losing that early in the season shifts pressure onto the rest of the roster.

What this means for Chicago’s season

The Cubs entered 2026 with hopes of building on recent progress, but injuries are already reshaping expectations. Horton was expected to play a key role in the team’s push for postseason contention.

Now, the focus shifts to survival and adaptation. The front office may need to explore trade options later in the season if the rotation struggles to hold up.