Rockies place Chase Dollander on 60-day injured list, with elbow concern pointing toward possible UCL surgery

The Colorado Rockies moved a significant piece of their rotation to the 60-day injured list on Friday, placing right-hander Chase Dollander on the shelf and indicating that his elbow problem is not expected to resolve quickly. The move reduces Colorado’s near-term starting depth and reshapes the immediate plan for how the Rockies cover innings while Dollander’s recovery progresses.

According to an MLB report from the Rockies, Dollander originally landed on the 15-day injured list on May 15. That initial placement came right after he left Colorado’s road game against the Pittsburgh Pirates on May 14. The timeline suggests the issue emerged late enough in the sequence of starts that the team moved cautiously, then escalated to the longer IL window once the long-term outlook became clearer.

The decision to place Dollander on the 60-day injured list also places the focus on the type of elbow problem he is dealing with. The report characterizes the situation as trending toward UCL surgery, a reference to common medical pathways for pitchers who experience persistent inner-elbow pain and loss of function associated with the ulnar collateral ligament. For clubs, that matters because surgical recovery typically spans months, and roster planning must account for both rehabilitation and the risk of setbacks.

For the Rockies, who depend heavily on their starters to manage the pace of their season, the shift is more than a procedural roster move. A starting pitcher on the 60-day IL is effectively removed from the day-to-day rotation conversation, which forces Colorado to rely on other starters, stretch their relief group, or turn to depth options earlier than planned. The impact usually shows up quickly in workload distribution, bullpen usage, and the stability of the rotation order.

Dollander’s absence comes at a time when an extended IL stint can influence how a team balances short-term results with longer-term development. If the elbow concern truly trends toward surgery, the team’s pitching staff planning will likely shift from “when will he return” to “how will he build back,” including innings ramp targets and whether he requires additional mechanics work after rehab. In practical terms, the Rockies must assume that the rotation spot he occupied will need to be filled in a sustained way.

For Colorado’s broader season picture, the move also affects how the organization measures its pitching depth. When an established starter is sidelined on a longer IL window, it creates an opening for other pitchers to demonstrate whether they can handle major-league volume, whether from the rotation or through a spot-start approach. Those opportunities can accelerate evaluations, but they can also expose gaps that the team would rather solve through internal consistency.

What to watch next is the team’s stated medical timetable and the specifics of the treatment plan. The report indicates a trajectory toward UCL surgery, but until that path is finalized and the rehab process begins, the exact return window remains uncertain. Over the next several turns of the rotation, the Rockies’ response, particularly how they manage innings and bullpen leverage, will be an early indicator of how they plan to weather the loss while Dollander works through recovery.

In the near term, Dollander’s placement on the 60-day injured list underscores the reality that elbow injuries for pitchers are rarely “quick fixes.” For the Rockies, it is a roster challenge with long-range implications, one that will influence both the immediate shape of their pitching staff and their longer-term confidence in how their rotation depth can carry the team through the summer.