Esmerlyn Valdez placed on 10-day IL with left hamstring strain, Ronny Simon called up

The Pittsburgh Pirates placed outfielder Esmerlyn Valdez on the 10-day injured list with a left hamstring strain, the club announced, with Ronny Simon recalled in a corresponding move. The injury occurred while Valdez was running to first base. Severity remains unknown.

What happened

The Pirates announced the move on September 13, placing Valdez on the 10-day IL after he strained his left hamstring running to first base. Ronny Simon was recalled to fill the roster vacancy. Aiden Stepansky of MLB.com characterized the development as a blow to Pittsburgh's offense.

Under general league rules, the 10-day IL is the standard designation for position players, meaning Valdez must remain off the active roster for at least ten days before he is eligible to return. The club has not indicated a timetable, and the severity of the strain has not been disclosed — which, with hamstring injuries, is the part of the sentence that does most of the work.

Why it matters

The Pirates enter the final weeks of the regular season at 74-75, already eliminated from the NL Central division race and sitting fifth in the Wild Card standings, 6.5 games relative to the cut line. There is no margin for roster disruption, and losing an outfielder to a hamstring injury — one of the more unpredictable soft-tissue ailments in terms of recovery arc — adds genuine uncertainty to a lineup that cannot easily absorb it.

The Valdez news arrives in the middle of a difficult stretch for Pittsburgh's roster depth more broadly. Two days before the Valdez placement, the club put All-Star starting pitcher Braxton Ashcraft on the injured list with right arm discomfort. The Pirates are also navigating the situation around reliever Kirby Yates, who has been dealing with recurring injuries and has raised the possibility of retirement, per reports from earlier in the week. The bullpen and rotation picture was already complicated before the offense developed its own question mark.

On a modestly more encouraging note, Ryan O'Hearn was activated off the injured list by the Pirates on September 12 — returning a bat to the roster one day before Valdez went down. The roster carousel, as it turns out, does not pause to let anyone catch their breath.

Where the club stands

Pittsburgh sits at 74-75 (.497), third in the NL Central and 19 games back in the division — a race the club has already been eliminated from. In the Wild Card picture, the Pirates rank fifth, 6.5 games relative to the cut line. They have dropped two straight heading into the week.

The schedule ahead offers no soft landing. The Pirates are at Wrigley Field on Sunday, September 13, where Bubba Chandler is the probable starter against the Cubs' Matthew Boyd. Pittsburgh then returns home to PNC Park for a two-game set against the Milwaukee Brewers on September 15 and September 16.

The expanded September roster — 28 active players from September 1 through the end of the regular season under general league rules — gives the Pirates some flexibility in how they configure their active group around the IL placements. Simon's recall is the direct response to the Valdez vacancy, and the larger roster window means the club can carry depth it would not have had available in August. That flexibility matters more when you are managing multiple absences at once, which Pittsburgh currently is.

It is worth noting the broader texture of this roster moment. The Ashcraft IL placement two days ago, the Yates situation, the O'Hearn activation, and now the Valdez placement have all landed within a narrow window of days. The Pirates are not the first team to find September's expanded roster both a blessing and a necessity at the same time.

What we don't know yet

The severity of Valdez's left hamstring strain has not been disclosed. Hamstring injuries exist on a wide spectrum, and the club has offered no timetable for his return. The 10-day IL sets a floor, not a ceiling, and until more information emerges, the length of his absence is genuinely open.

It is also unclear how the Pirates plan to configure their outfield in the interim, or what role Simon is expected to fill beyond the immediate roster arithmetic. The club has not addressed those questions publicly, per available reporting.

The Ashcraft situation carries its own unresolved uncertainty. Right arm discomfort for a starting pitcher is a phrase that can mean many things, and the Pirates have not provided a timetable there either. The club is managing multiple IL situations simultaneously as September winds down, and how those resolve — or do not — will shape what Pittsburgh carries into the offseason.

What to watch

### Is there a timetable for Valdez's return?

Not yet. The club has not disclosed the severity of the strain, and until that information surfaces, the length of his absence remains an open question. A minor hamstring strain and a significant one look very different on a recovery calendar, and the Pirates have not indicated which end of that spectrum applies here.

Watch also for how Pittsburgh configures its outfield against the Cubs on Sunday and into the Brewers series next week. With the Wild Card gap at 6.5 games and the club on a two-game losing streak, the remaining schedule is less about October positioning and more about how the organization evaluates its young players in meaningful late-season situations — which makes the health and availability of those players matter even in a standings context that has largely resolved itself.

The Yates situation is worth monitoring in parallel. A reliever weighing retirement while dealing with recurring injuries represents a different kind of roster uncertainty than a standard IL placement, and the Pirates have not resolved that question publicly. Between Ashcraft, Yates, and now Valdez, Pittsburgh's final weeks will be shaped as much by what the training staff learns in the coming days as by what happens on the field at Wrigley or PNC Park.