Chris Bassitt moved to 60-day IL after lumbar bone spur surgery

What happened

Chris Bassitt is on the 60-day injured list after undergoing a procedure to remove a bone spur from his lumbar spine — a surgery he told the Baltimore Sun's Jacob Calvin Meyer he believes makes him the first big-league player to have undergone such an operation. Per MLB Trade Rumors, the Orioles transferred Bassitt to the 60-day IL, which sets August 4 as the earliest date he could return to Baltimore's rotation. The outlet notes that date is probably unlikely to be the actual return, but that a mid-August timeline seems feasible, assuming no setbacks in his recovery.

Bassitt had originally been placed on the 10-day injured list on June 5 with back soreness that, per the report, had bothered him throughout the season. The procedure came last month, and the move to the 60-day IL followed. Per MLB Trade Rumors, Bassitt is already feeling much better and has begun his throwing progression, including a long-toss session on Friday and a pair of bullpen sessions planned for the week of the report.

Why it matters

The 60-day IL designation carries a specific mechanical consequence worth understanding: under general league rules, a player on the 60-day IL is removed from the 40-man roster count, which creates a roster spot the club can use elsewhere. The clock on that 60-day minimum began running from the transfer date, which is why August 4 represents the floor on Bassitt's eligibility to return — not a projection, just the earliest the rules permit it.

For Baltimore, the operational stakes are real even if the playoff picture is not. The Orioles are eliminated from both the division race and the Wild Card race, so the urgency around Bassitt's return is less about October and more about what the back end of this rotation looks like for the remainder of a long season. A starting pitcher who has been dealing with a structural issue all year, now surgically addressed, is still a meaningful piece of the puzzle — both for the games left in 2026 and for what the club is building toward.

The novelty of the procedure adds a layer of genuine uncertainty that is worth taking seriously. Bassitt himself acknowledged to Meyer that the surgery is a new type of operation. That is not a reason for alarm, but it is a reason the mid-August window comes with the qualifier "assuming no setbacks" rather than a circled date on the calendar. MLB Trade Rumors does not invent timelines, and neither does this desk.

Where the club stands

Baltimore enters the week at 79-82 (.491), sitting fourth in the AL East, 18.5 games back in the division. In the Wild Card standings, they rank fifth, 4.5 games relative to the cut line — and they have been eliminated from that race as well. They arrive at this stretch on a one-game losing streak.

Those numbers frame the Bassitt situation honestly: this is a club playing out the string in the standings, which changes what "rotation depth" means in practice. The question is less "can Bassitt help us win a pennant" and more "can Bassitt get healthy, log some innings, and carry momentum into the offseason." The answer to the first question is settled. The second is what the next few weeks will tell.

Baltimore opens the week with three games at Fenway Park against the Boston Red Sox. On Monday, July 20, Shane Baz is the probable starter for the Orioles against Payton Tolle. Kyle Bradish takes the ball Tuesday against Eduardo Rivera, and Dean Kremer is lined up for Wednesday against Jake Bennett.

None of those three starters is Bassitt, which is the point. The rotation has been operating without him since early June, and it will continue to do so through at least early August. The Fenway series offers a look at how that group is holding up — and, for the curious, a chance to see whether the back-end arms can keep a lost season from becoming a rout.

What we don't know yet

The mid-August return window is framed by MLB Trade Rumors as feasible, not certain. The report is explicit that the qualifier "assuming no setbacks" is doing real work in that sentence. Because the procedure is, by Bassitt's own account to Jacob Calvin Meyer, a novel one, there is no established recovery template to lean on. The throwing progression is encouraging, but bullpen sessions and game readiness are different things, and the gap between them can widen quickly if anything goes sideways.

It is also worth noting that MLB Trade Rumors is reporting on Bassitt's comments to the Baltimore Sun, not relaying a club announcement. The Orioles have not issued a formal timetable, and the mid-August framing should be read as a reasonable inference from available information, not a scheduled return date.

Under general league rules, a pitcher on a rehab assignment can spend up to 30 days rehabbing before the club must activate him or make another roster decision. That window gives Baltimore some flexibility once Bassitt is ready to face live hitters — but that phase of the process has not begun yet, and the report does not suggest it is imminent.

What to watch

The obvious follow-up question is whether Bassitt's bullpen sessions this week go cleanly. Per MLB Trade Rumors, a couple of those sessions are planned, and they represent the next meaningful data point in his recovery. A pitcher who has had back soreness all season and then a lumbar procedure needs to demonstrate not just that he can throw, but that the mechanics hold up under the stress of an actual bullpen outing. Those sessions will not be public events, but the Orioles' injury updates in the days that follow should reflect how they went.

Beyond the immediate throwing program, the mid-August window is the next real checkpoint. If Bassitt is progressing on schedule, the club would presumably begin a rehab assignment sometime before that date — and that is when the public will get a clearer read on whether he looks like himself. For a rotation that has been carrying the load without him since June, his return, whenever it comes, would represent a meaningful addition. Whether the standings give that addition any context worth caring about is a separate question — and one the record has already answered.