The Colorado Rockies’ plans to fortify their bullpen for the 2026 campaign have hit a significant roadblock before the season could even get into full swing. Right-handed reliever RJ Petit is officially out for the year after undergoing ulnar collateral ligament (UCL) reconstruction, more commonly known as RJ Petit Tommy John surgery. The news is a particularly tough blow for a Colorado squad that had high hopes for the towering right-hander following his high-profile acquisition this past winter.
The Procedure: Tommy John with an Internal Brace
The Rockies confirmed that Petit underwent the procedure to repair his throwing elbow, which notably included the addition of an internal brace. This modern surgical variation involves using a high-strength, collagen-coated tape to reinforce the repaired ligament. While the internal brace can sometimes streamline the early stages of physical therapy, the standard recovery timeline for a pitcher remains extensive.
Given the timing of the surgery in late March 2026, RJ Petit is effectively ruled out for the entirety of the 2026 season. Fans and the organization will now look toward a potential return to the mound during the 2027 season. For a pitcher who relies on a high-velocity profile, the focus over the next 12 to 15 months will be a meticulous rehabilitation process to ensure his arm can handle the rigors of pitching at Coors Field.
A Major Setback for the Rule 5 Selection
The loss of Petit is especially impactful given the capital the Rockies invested to acquire him. Petit was the #1 overall pick in the December 2025 Rule 5 Draft, selected away from the Detroit Tigers organization. The Rockies viewed the 6-foot-8 reliever as a potential cornerstone of their middle-relief corps, hoping his physical presence and downward plane would play well in the thin air of Denver.
Before joining the Rockies, Petit enjoyed a breakout 2025 season within the Tigers' system. He split his time between Double-A Erie and Triple-A Toledo, where he showcased the swing-and-miss capabilities that made him the top prize of the Rule 5 draft. The Rockies were eager to see that production translate to the Major League level this spring, but those plans are now on indefinite hold.
Navigating the Rule 5 Roster Requirements
Because Petit was a Rule 5 selection, his injury creates a complex roster situation for Colorado. Under MLB rules, a Rule 5 pick must remain on the team’s active roster (or the Major League Injured List) for the entire following season. Furthermore, the player must be active for at least 90 days to have the Rule 5 restrictions removed.
By placing Petit on the 60-day Injured List, the Rockies can retain his rights while freeing up a spot on the 40-man roster for the 2026 season. However, because he will not meet the 90-day active requirement this year, those restrictions will carry over into 2027. This means Petit will still need to spend significant time on the active roster next year for the Rockies to fully secure his player rights and prevent him from being offered back to the Tigers.
Impact on the 2026 Colorado Rockies Bullpen
The Rockies entered the 2026 spring training looking for stability in a bullpen that has historically struggled with consistency. The absence of RJ Petit leaves a void in the middle innings that the team must now fill with internal depth or external acquisitions. The team will likely lean more heavily on established arms and other young prospects to bridge the gap to the late innings.
- Roster Depth: The Rockies may now look toward veteran non-roster invitees to provide the bulk innings Petit was expected to cover.
- Prospect Opportunities: With Petit sidelined, other power arms in the Rockies' upper minors may see an accelerated path to the big leagues.
- Long-term Outlook: While 2026 is a lost year for Petit’s development, the organization remains committed to his long-term potential as a high-leverage relief option.
For RJ Petit, the road to recovery begins now. While the 2026 season will be spent in training rooms rather than on the pitcher's mound, the Rockies remain hopeful that the #1 Rule 5 pick can return at full strength in 2027 to finally make his mark in the Mile High City.
Sources & Original Reporting
