Joe Musgrove's 2026 return with Padres now uncertain after recovery stalls

What happened

Joe Musgrove's path back to the San Diego Padres rotation has hit another wall. Per Kevin Acee of the San Diego Union-Tribune, the right-hander is not recovering between rehab outings as quickly as he would like, and it is no longer certain he will be able to rejoin the club at any point in 2026.

Padres manager Craig Stammen has attributed the issue to arm fatigue — not what happens during the starts themselves, but what accumulates in the days between them. That distinction matters. Musgrove has been able to take the mound and log innings; the problem, per the report, is the recovery window that follows each appearance.

Why it matters

In October of 2024, Musgrove had Tommy John surgery along with a flexor tendon repair. He missed the entire 2025 season, and the original hope was that he could return as a meaningful contributor in 2026. That timeline has not materialized, per the Union-Tribune, due to repeated setbacks along the way.

What makes the current situation particularly difficult to read is the shape of his rehab progression. He began a rehab assignment on August 4, throwing 2 2/3 innings in a Single-A game. Five days later, on August 9, he made a Triple-A start and logged 3 1/3 innings. Five days after that, on August 14, he reached 4 2/3 innings — a trajectory that, on paper, looked like a pitcher building steadily toward a return.

Then came the gap. His next start did not arrive for 12 days, on August 27. He did throw five innings in that outing, but per the report, the extended rest required between appearances is the central concern. The innings are there; the recovery is not keeping pace.

Under general league mechanics, pitchers on a rehab assignment have up to 30 days before they must be activated or have their status addressed. The clock and the arm are now in conversation with each other, and it is not clear which one blinks first.

Where the club stands

The Padres enter September at 74-67 (.525), sitting second in the NL West, 10 games back of the division lead, and riding a one-game winning streak. The margin for error in a wild-card chase is thin enough that every rotation decision carries weight — which is precisely why Musgrove's uncertain status registers beyond the sympathetic.

The expanded roster offers some operational cushion. General league rules allow 28 active players from September 1 through the end of the regular season, up from 26 through August. That flexibility helps a bullpen carrying extra load, but it does not conjure a starting pitcher out of the calendar.

The upcoming schedule offers a useful snapshot of what the Padres are navigating. On Wednesday, September 2, they are at Cincinnati's Great American Ball Park, where Casey Mize is the probable starter against Brandon Williamson. Friday, September 4 brings the New York Yankees to Petco Park, with Walker Buehler projected against Max Fried. The following day, Saturday, September 5, Robbie Ray is lined up against Carlos Rodón in the second game of that series.

That is a rotation being asked to perform in meaningful late-season games without the pitcher who, not long ago, was expected to be part of it. The Padres have been managing around Musgrove's absence all season; the question now is whether they will need to manage around it for the remainder of the year as well.

It is also worth noting that the Padres called up top prospect Ethan Salas for the September stretch run, with the 20-year-old catcher making his Major League debut on September 2. The roster is being shaped for a postseason push; Musgrove's availability — or lack of it — remains one of the larger variables still unresolved.

What we don't know yet

Per the Union-Tribune report, it is not certain Musgrove will pitch for the Padres in 2026 at all. That framing — not certain — is doing real work. It does not foreclose a return; it does not promise one. The report does not specify a revised timetable, a new medical threshold he needs to clear, or a decision point at which the club would formally address his status for the year.

What the report does establish is that the optimism surrounding his rehab start sequence in early August has been tempered. The 12-day gap between his August 14 and August 27 outings, and the fatigue Stammen described, suggest the recovery curve is not behaving the way the club had hoped.

Whether that means a few more weeks of monitoring, a longer pause, or an end to the 2026 season for Musgrove is not something the report answers. The uncertainty is the story right now, and the Union-Tribune is careful to preserve it.

What to watch

The most direct question is whether Musgrove makes another rehab start and, if so, how quickly he is able to do so. The interval between outings has become the diagnostic signal — a short turnaround would suggest the fatigue is being managed; another extended gap would reinforce the concern Stammen raised.

Beyond the individual starts, watch for any formal roster or injured list transaction involving Musgrove. He has been on the 60-day IL, which removes him from the 40-man roster count under general league rules; any change to that status would be a concrete indicator of how the club is reading his trajectory as September deepens.

For the Padres as a whole, the rotation picture heading into the final weeks of the regular season is worth tracking closely. With a 74-67 record and a postseason spot still in play, the starts lined up against the Yankees this weekend — Buehler on Friday, Ray on Saturday — will tell their own story about where this staff stands without Musgrove in it.

The arm fatigue is real, per the report. The timeline is uncertain, per the report. Everything else is September baseball, and it does not wait.