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Will Klein completed a bullpen session on Tuesday and is on track for a possible return during the postseason, per staff at Dodger Blue. The right-hander’s progress in his recovery from injury signals the organization has a genuine chance to add another reliable arm to the bullpen for October baseball.

Klein has been sidelined on the 60-day IL but his bullpen session marks a significant milestone in his return progression. The fact that he’s throwing off the mound in a controlled bullpen setting—rather than simply playing catch or doing arm strength work—indicates the medical staff believes his arm is stable enough for baseball-specific activity. For a pitcher working his way back from extended time off, progressing from rehab assignments to actual bullpen sessions requires careful management to avoid re-injury. The organization’s decision to advance Klein to this stage suggests they have confidence in his trajectory. Whether he needs one more step (perhaps a rehab appearance in Triple-A) or can proceed directly to major league availability depends on how the bullpen session goes and whether the medical staff is satisfied with his mechanics and arm strength.

For the Dodgers, Klein’s progression toward postseason availability is critical. The bullpen has been stretched thin by injuries and workload management throughout September. Having another reliable arm like Klein available would provide flexibility in high-leverage situations and reduce the burden on Evan Phillips, Blake Treinen, Tanner Scott, and the emerging depth of Edgardo Henríquez. Klein’s bullpen session doesn’t guarantee October availability, but it puts him on a realistic timeline to contribute. The question now is whether he can build arm strength quickly enough to be game-ready if the Dodgers need him in October. A bullpen arm with his pedigree, if healthy, is exactly what we need for a postseason run.

For the Dodgers organization broadly, Klein’s progression fits a pattern we’re seeing across the injury recovery pipeline. Edwin Díaz is making rehab assignments toward rotation return. Andy Pages is hitting off the tee. Roki Sasaki is nearing return. And now Klein is throwing bullpen sessions for postseason availability. Each of these represents a potential reinforcement heading into October. Whether they all arrive healthy and ready to contribute depends on timing and the next steps in their respective recovery protocols. For Klein specifically, his bullpen session is a positive sign that the organization is planning for his postseason availability rather than viewing him as lost for the year. That kind of depth flexibility could prove crucial in October baseball.

Source(s): Staff (Dodger Blue) | First reported: September 9, 2026 7:15 PM UTC

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