POSTERIOR · WIRE
InjuryCLESep 15, 2026, 6:14 PM EDTSignal confidence 75%

Chase DeLauter and Angel Martínez out of Guardians lineup with injuries

Both DeLauter and Martínez are out of Cleveland's lineup with injuries, per MLB.com's Tim Stebbins, as the Guardians sit 0.5 games back in the AL Central.

Posterior generated visual for Cleveland Guardians: Chase DeLauter and Angel Martínez out of Guardians lineup with injuries

What happened

Chase DeLauter and Angel Martínez are both out of the Cleveland Guardians lineup due to injuries, MLB.com's Tim Stebbins reported, with the club in the middle of what the outlet described as a key series.

Neither absence has been characterized beyond the lineup scratch. No diagnosis, timetable, or IL placement has been reported for DeLauter. Martínez's situation carries a bit more recent history: he exited a game against the Chicago White Sox early due to right flank inflammation just a day prior, per earlier Posterior Wire reporting, and his absence from Tuesday's lineup follows directly from that exit.

Why it matters

The Guardians are 77-75 (.507), sitting 0.5 games back of first place in the AL Central. That is not a margin that accommodates a casual approach to lineup construction. Losing two position players — even for a single game — in a series the club itself has flagged as meaningful is the kind of thing that makes a front office reach for the antacids.

DeLauter and Martínez represent youth and versatility in a Cleveland lineup that has leaned on both throughout the season. Their simultaneous absence, whatever the underlying reasons, compresses the options available to the club at a moment when every game in the division race carries outsized weight.

Is Martínez's absence connected to the White Sox game?

The timeline lines up: Martínez left that game early with right flank inflammation, and he is now out of the next lineup. Tim Stebbins' MLB.com report lists him as out due to injury, but no formal designation or updated diagnosis has been reported. The right flank inflammation from the previous game is the only medical detail on record. Whether Tuesday's absence is precautionary, whether it reflects something more significant, or whether an IL move is forthcoming — none of that has been reported.

The numbers

Cleveland's record of 77-75 (.507) places them second in the AL Central, half a game behind the division leader, riding a one-game winning streak into this stretch. The math is unforgiving: at 0.5 games back with the calendar deep into September, the difference between first and second in the division is essentially a single game in the standings.

The broader injury picture around the club adds texture to those numbers. Andrew Walters underwent UCL repair surgery on his right elbow and faces a 10-to-12-month recovery timeline, per earlier Posterior Wire reporting — a significant blow to the pitching staff that predates this latest development. The club selected right-hander Connor Brogdon's contract from Triple-A Columbus to add a bullpen arm, per reporting earlier this week, which speaks to how actively Cleveland has been managing its roster depth as the season reaches its final weeks.

Where the club stands

The Guardians are 77-75 (.507), second in the AL Central, 0.5 games back, and have won their last game. Wednesday's home game at Progressive Field against the Chicago White Sox — the same team Martínez exited against — features Parker Messick against Anthony Kay as the probable pitching matchup, per MLB.com. After that, Cleveland hosts the Athletics on Friday, September 18 and Saturday, September 19.

The White Sox series, then, is not an abstract label. It is a direct continuation of the game in which Martínez was hurt, and it is happening while the Guardians are within half a game of the division lead. The schedule does not offer a soft landing.

September rosters expand to 28 players under current league rules, which gives clubs more flexibility to carry additional position players and absorb lineup disruptions without necessarily placing anyone on the injured list. Whether Cleveland uses that flexibility to address these absences is a roster management question that has not yet been answered in any reporting.

What we don't know yet

For DeLauter, there is no reported diagnosis, no reported mechanism of injury, and no reported timetable. Tim Stebbins' MLB.com report establishes only that he is out of the lineup with an injury. That is the full extent of what has been reported, and the desk is not in the business of filling gaps with inference.

For Martínez, the right flank inflammation from the previous game is the only medical detail available. Whether Tuesday's absence is a one-day precaution or the beginning of something longer has not been reported. No IL placement has been announced for either player.

It is also worth noting that the Walters situation — a 10-to-12-month recovery timeline following UCL repair surgery, per earlier reporting — has already been reshaping Cleveland's roster calculus heading into this final stretch. The Brogdon selection from Triple-A Columbus addressed one gap. Whether the front office has additional moves in mind to cover for DeLauter and Martínez has not been reported.

What to watch

The most immediate question is whether either player appears in Wednesday's lineup against the White Sox. If Martínez misses a second consecutive game, the right flank inflammation becomes a more pressing storyline. If DeLauter's absence extends beyond Tuesday, the club will face questions about whether a formal IL move is coming — which would also trigger a 40-man roster decision.

Beyond the individual health updates, the division race context makes every lineup card worth scrutinizing. At 0.5 games back with the schedule running out, Cleveland's ability to field its preferred lineup against the White Sox — a club they are directly chasing in the standings — shapes the texture of this final push in ways that a healthy roster would not.

Tim Stebbins' MLB.com report does not offer a resolution on either player, and the picture remains genuinely incomplete. What it does offer is a clear snapshot of where things stand: two players out, a division race very much alive, and a Wednesday afternoon at Progressive Field that will tell us something about both.

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Chase DeLauter and Angel Martínez out of Guardians lineup with injuries